Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
luan thong » luan phong, luan tuong, luat thong
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
thu bang » thu ban, thu hang, chu bang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh 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 ((chuc nang) or (thu bang)) - hanh tang luan thong cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc nang) OR (thu bang)) - hanh tang luan thong cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chuc nang) or (thu bang)) - hanh tang luan thong cong dan toan cau*.