Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
hanh huong » thanh huong, anh huong, manh huong
cua thuong » cua truong, cua phuong, ca thuong
hoc thieu » toc thieu, hoc hien
huong cua » dung cua
chinh can » chinh ca, chinh ban, chinh cau
doc hieu » toc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (hoc thieu)) xanh - hanh huong cua thuong cong tan ((phan cau) or (chinh can))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) xanh - hanh huong cua thuong cong tan ((phan cau) OR (chinh can)).
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc thieu)) xanh - hanh huong cua thuong cong tan ((phan cau) or (chinh can))*.