Perhaps you should try some spelling variations:
luan nhung » luan chung, luan hung, quan nhung
chua xang » chua nang, chuc nang, chu bang
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
kha nang » phap nang, ky nang, ki nang
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 ((chua xang) or (kha nang)) - hanh tang luan nhung ((huong dan) or (cong tac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (kha nang)) - hanh tang luan nhung ((huong dan) OR (cong tac)) toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) or (kha nang)) - hanh tang luan nhung ((huong dan) or (cong tac)) toan cau*.