Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
tu cao » cu cao, vu cao, su cao
ma hoi » mai hoi, xa hoi, ma hoa
cac tu » cac thu, cach tu, cac du

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: ((tu cao) OR (tu cac)) ky nang ma hoi. hieu va cac tu va thanh vi ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cao) OR (tu cac)) ky nang ma hoi. hieu va cac tu va thanh vi ((cua tre) or (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: ((tu cao) OR (tu cac)) ky nang ma hoi. hieu va cac tu va thanh vi ((cua tre) or (cuu tre))*.