Perhaps you should try some spelling variations:
thang cong » thanh cong, thang long, thong cong
hieu lang » chieu sang, hieu quang, nhieu tang
thang cua » thong cua, hang cua, than cua
hoi hieu » hoi phieu, hoi tieu, moi hieu
manh cua » doanh cua, ban cua
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

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