Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap
va nang » van nang, cam nang, kha nang
da nang » cam nang, kha nang, cao nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (toc thieu)) xanh - hanh trinh ((va nang) OR (da nang)) cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (toc thieu)) xanh - hanh trinh ((va nang) OR (da nang)) cong san toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (toc thieu)) xanh - hanh trinh ((va nang) OR (da nang)) cong san toan cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (toc thieu)) xanh - hanh trinh ((va nang) OR (da nang)) cong san toan cao*.