Perhaps you should try some spelling variations:
tang ma » mang may, tang van
doi cua » dai cua, hoi cua
hieu va » lieu va, hieu qua
ky tang » ky nang, ky dang, kho tang
luc va » duc va, loc va
vu cac » va cac, tu cac, ve cac
va cam » va cham, va cac, va cao
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu cac ky tang ma hoi. hieu va cam ((tuc va) or (luc va)) danh ((doi cua) or (hoi chuc)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu cac ky tang ma hoi. hieu va cam ((tuc va) OR (luc va)) danh ((doi cua) OR (hoi chuc)) tre.
• Adding a wildcard symbol may retrieve word variants: vu cac ky tang ma hoi. hieu va cam ((tuc va) or (luc va)) danh ((doi cua) or (hoi chuc)) tre*.