Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
luong cong » dung cong, trong cong, cong cong
hoc thieu » hoc hien
trinh va » trinh van, trinh vat, trinh ve
va luong » van luong, va tuong, va huong
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai 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: ((hoc thieu) or (toc thieu)) xanh - hanh trinh va luong cong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) xanh - hanh trinh va luong cong tap toan cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) xanh - hanh trinh va luong cong tap toan cau*.