Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, thi chieu
tang luan » dung luan
dong cong » duong cong, dung cong, dang cong
theo chu » cho chu, chao chu, theo yeu
tang cua » mang cua, hang cua, thong cua
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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: ((theo chieu) or (theo chu)) xanh - hanh ((tang cua) or (tang luan)) dong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) xanh - hanh ((tang cua) OR (tang luan)) dong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo chu)) xanh - hanh ((tang cua) or (tang luan)) dong cong tac toan cau*.