Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hieu nganh » vien nganh, hiem ngan, hieu manh
canh trinh » canh tranh, hanh trinh, anh trinh
nhung cong » dung cong, thong cong, hang cong
vang thanh » van thanh, dang thanh, tang thanh
canh tinh » hanh tinh, manh tinh, canh tranh
van nhung » van nhuong, va nhung, van hung
cong vang » cong lang, cong quang, cong ngang
thanh cao » thanh ca, thanh cac, thanh thao

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