Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
danh ve » dinh ve, hanh ve, anh ve
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, duc va
ve va » ve van, te va, ke va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang xa hoi. hieu va cam ((tuc va) or (tuc xa)) danh ve va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang xa hoi. hieu va cam ((tuc va) OR (tuc xa)) danh ve va trien.
• Adding a wildcard symbol may retrieve word variants: te sac ky nang xa hoi. hieu va cam ((tuc va) or (tuc xa)) danh ve va trien*.