Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thong cong » trong cong, tong cong, thong thong
thanh thao » thanh thanh, thanh thang, thanh pho
hoc thieu » toc thieu, hoc hien
trinh van » trinh quan, trinh toan, dinh van
trinh han » trinh quan
cong lang » cong vang, cong luong, cong quang
thanh cao » thanh ca, thanh cac, thanh cham

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 - canh ((trinh van) OR (trinh han)) thong cong lang ((thanh cao) OR (thanh thao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh ((trinh van) or (trinh han)) thong cong lang ((thanh cao) OR (thanh thao))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh ((trinh van) or (trinh han)) thong cong lang ((thanh cao) OR (thanh thao))*.