Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
thanh tung » thanh cong
thien anh » thien danh, tien anh, thien thanh
dung cong » dung trong
cap dung » ap dung, cao dung, chan dung
cong san » cong tac
san ran » san van, san roman, van ranh
ran cau » van cau, ban cau, can cau

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