Perhaps you should try some spelling variations:
thanh tong » thanh cong, thanh tung, thanh long
thieu xanh » chieu xanh, hieu manh, thien danh
thien anh » thien danh, tien anh, thien thanh
quan cong » luan cong, quan dong, quan long
qua cong » cua cong, qua song, va cong
cong van » cong vang, cong san, song van
van tan » van tuan, van ban, van tai
tan cau » toan cau, van cau, tan ca

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