Perhaps you should try some spelling variations:
luan nhung » luan chung, luan hung, quan nhung
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
theo chu » theo chieu, cho chu, chao chu
chu manh » ho manh, chu han, chu van
cong tac » cong ty
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 chu manh - hanh tang luan nhung ((cong san) or (cong tac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu manh - hanh tang luan nhung ((cong san) OR (cong tac)) toan cau.
• Adding a wildcard symbol may retrieve word variants: theo chu manh - hanh tang luan nhung ((cong san) or (cong tac)) toan cau*.