Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
kha nang » phap nang, ky nang, ki nang
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cao » toan ban, toan tap
doi chi » doi khi
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (doi chi)) xanh - hanh trinh ((va hang) or (kha nang)) cong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doi chi)) xanh - hanh trinh ((va hang) OR (kha nang)) cong tap toan cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chi)) xanh - hanh trinh ((va hang) or (kha nang)) cong tap toan cao*.