Perhaps you should try some spelling variations:
ve triet » va trien, su triet
nang dau » hang dau, xang dau, nang du
hanh lai » hanh lam, hanh tai, thanh lap
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
su sach » so sach, vu sach
dau hoi » cau hoi, dai hoi, dan hoi
tu nang » tru nang, tu nong, tu nano
bo sach » co sach, hoc sach
hieu ve » hieu van
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 dau hoi. ((hieu ve) OR (hieu va)) cam xuc va hanh lai ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (bo sach)) tu nang dau 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 dau hoi. ((hieu ve) OR (hieu va)) cam xuc va hanh lai ve triet*.