Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hanh lai » hanh lam, hanh tai, thanh lap
nang cau » nang cao, hang cau, nang dau
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
hieu ve » hieu van
su sach » so sach, vu sach
tu nang » tru nang, tu nong, tu nano
bo sach » co sach, hoc sach
xuc va » duc va, tuc va, luc va
lai ve » loai ve, lai va, la ve

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

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