Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
phan cong » thanh cong
doc hieu » toc thieu, hoc hien
ban cong » bang cong, van cong, ban huong
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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 (doc hieu)) xanh - hanh tranh cua ((ban cong) or (phan cong)) tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doc hieu)) xanh - hanh tranh cua ((ban cong) OR (phan cong)) tac toan ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doc hieu)) xanh - hanh tranh cua ((ban cong) or (phan cong)) tac toan ban*.