Perhaps you should try some spelling variations:
cang thang » cong thanh, dang thanh
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hang hang » nang hang, hung thang, lang thang
cong vang » cong lang, cong quang, cong ngang
thanh cau » thanh chau, thanh mau, nhanh cau
cong van » cong san, song van, cong tan
va dung » van dung, va duong, vat dung

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

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