Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
hanh ban » thanh ban, hang ban, hanh san
cong tac » cong ty
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo tieu) or (hoc hien)) xanh - hanh ban cua thong cong tac ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (hoc hien)) xanh - hanh ban cua thong cong tac ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (hoc hien)) xanh - hanh ban cua thong cong tac ((toan cau) or (toan tap))*.