Perhaps you should try some spelling variations:
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
tinh lai » tinh lao, tinh hai, minh lai
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
luc may » truc may, phuc may
lai va » loai va, mai va, dai va

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tru nang xa hoi. ((hieu ve) OR (hieu qua)) cam luc may tinh lai va triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach tru nang xa hoi. ((hieu ve) or (hieu qua)) cam luc may tinh lai va triet*.