Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, anh trinh
hoc thieu » hoc hien
canh tinh » hanh tinh, manh tinh, canh tranh
hung cong » nhung cong, hung cuong, phung cong
cong lang » cong vang, cong luong, cong quang
lang than » lang thang, lang thanh, sang than
van hung » van dung, manh hung, van duong
than cao » toan cao, thai cao, than cap

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 - ((canh trinh) OR (canh tinh)) van hung cong lang than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) xanh - ((canh trinh) OR (canh tinh)) van hung cong lang than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (toc thieu)) xanh - ((canh trinh) OR (canh tinh)) van hung cong lang than cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) xanh - ((canh trinh) OR (canh tinh)) van hung cong lang than cao*.