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 than » tac thanh, tam than, tac nhan
than ban » thanh ban, toan ban, than man

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 than ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (doc hieu)) xanh - hanh tranh cua ((ban cong) OR (phan cong)) tac than ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (doc hieu)) xanh - hanh tranh cua ((ban cong) OR (phan cong)) tac than ban*.