Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » thien van, lieu va
tan hanh » tan thanh, tang hanh, toan hanh
hanh dai » hanh tai, hanh dao, vanh dai
su sach » so sach, vu sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
xuc tan » duc tan, xuc tac, xuc ban

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: su sach tu nang xa hoi. ((((hieu ve) OR (hieu va))) OR (hieu van)) cam xuc tan hanh dai cua triet~.
• Adding a wildcard symbol may retrieve word variants: su sach tu nang xa hoi. ((((hieu ve) or (hieu va))) or (hieu van)) cam xuc tan hanh dai cua triet*.