Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
luong quan » thong quan, duong qua
nhu phuong » thu phuong, nhung phuong, thi phuong
phuong dan » phuong danh, phuong doan, huong dan
thien anh » thien danh, tien anh, thien thanh
trung cap » truong cao, trung tam
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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