Perhaps you should try some spelling variations:
kho tang » cao tang
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
ky tang » ky nang, ky dang, ky trong
ma hoi » mai hoi, xa hoi, ma hoa
ve dat » de dat, ve dao, viec dat
va dat » va dao, va dau, va dap
vi cua » vai cua, di cua
vu san » va san, vu ban
nuoc » quoc, duoc, ngoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu san ((ky tang) or (kho tang)) ma hoi. hieu ((ve dat) OR (va dat)) nuoc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu san ((ky tang) OR (kho tang)) ma hoi. hieu ((ve dat) OR (va dat)) nuoc va hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu san ((ky tang) or (kho tang)) ma hoi. hieu ((ve dat) OR (va dat)) nuoc va hanh vi cua tre*".