Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
thi chieu » thi chien, thi hieu, theo chieu
tranh va » tranh van, trang va, trinh va
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh tuan

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

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