Perhaps you should try some spelling variations:
ve triet » va trien, su triet
cham xuc » cam xuc, chat xuc, cham soc
sach tu » sach thu, cach tu, sach ty
dinh su » dinh so, hinh su, dinh cu
va dinh » van dinh, va kinh, va tinh
hieu va » hieu qua
tu sach » thu sach, su sach, te sach
tu nang » tru nang, tu nong, tu nano
xuc va » duc va, tuc va, luc va
o hoi » co hoi, o hoc, o hai
su ve » su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach tu nang ((o hoi) or (x ho)). ((lieu va) or (hieu va)) cham xuc va dinh su ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nang ((o hoi) OR (x ho)). ((lieu va) OR (hieu va)) cham xuc va dinh su ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach tu nang ((o hoi) or (x ho)). ((lieu va) or (hieu va)) cham xuc va dinh su ve triet*.