Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
trang cua » tranh cua, tang cua, trung cua
dang cong » dung cong
nho hieu » nha hieu, nho sieu, nhu hieu
mang cua » manh cua, dung cua, ban cua
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: nho hieu lang - hanh ((trang cua) or (mang cua)) dang cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nho hieu lang - hanh ((trang cua) OR (mang cua)) dang cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: nho hieu lang - hanh ((trang cua) or (mang cua)) dang cong tac toan ban*.