I pasted incorrect query in point 5. It should be:
5. MORE DETAILED QUERY WITH INDEX
select keywords from search_tab where
(to_tsvector('german', keywords ) @@ to_tsquery('german', 'eeI:*')) and
(to_tsvector('german', keywords ) @@ to_tsquery('german', 'dd:*'));
keywords
--------------------------------------------------------------------------------
lSWN eeIf hInEI IN SIL3WugEOANcEGVWL1L LBAGAeLlGS ttfL DDhuDEIni9 ce
tSALWIEEIn-3WNecGAINfLuLAV DDLIWNG E Lt h c8 BiIfgGl1 EeIhulSLenS6LDe5O
hGn DDlhIgGEAcS1O eeiEEI WnILWELS68VBLL AGNIAfINt6 lLuWuNeDc ItLfe SL
hGe WIiI EeItnLLuA1efOh3ALWc uGINEltcIBE LnegLDNA3 DD SVNG LSSIlWfE
eeIW ItueS W39LnELg-GuDLEhAn8BeFG IVi DDNEfLG1SI 1tNIOA lAhNLLccfWISE l
6em on.0nsRH nehSA2l1HAsauncu0I65l7 ddnsn1SAS i u0eLAnlr t70gaains w gzsH
eeiog
rfiwgso0g364l1 1wU eei1n 5lL dDA 0
DDInNcEfSWAEAtcL1IeSuAG5LE Lilh8tEGeDg f3B eEIOL7h uWV-L1IGN LINWeIn l S
ils eeiru00ewH.6sgAeHoSlLhglso0 asn0u2a atisA0 ddcngAnzRA Se Au2 nm8ns0
uS8snH
DDD EWlE1GShhLe8L NENI tuL cgGGInfcBAlLfIO L1S eeIWeAEnILStu AViWNI
n IOLLt 0Alih tuWNE L nAGlVSNSDI DDeW BIegfG EeIhL9ELeScELWGAIfN1uIc
DnSE eeIWLu9tLNhNEuAt I1BelhGGfLWLS nSWINI eiELgAIG DDLEclV7 IO c Af
EeIElfN L4I lE2G cSOLniAWgSVItc ILDN L57BuDfALtSIe-WnGhGIW DDA NE1Lhuee
hNILN DD L6flSEeW1gthfI L1WAlENE eEIGIAt VGBDO uGLeLccAeSuLWIn Ii nS
(14 rows)
--
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