Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh trung » thanh tung
trong phong » trong cong, hong phong, trong nong
thieu xanh » chieu xanh, hieu manh, thien anh
trung cao » truong cao, trung cap, trung co
cao trong » cao truong, cay trong, tao trong
phong hoc » phong ho, thong hoc, phuong hoa
hoc phan » hoc dan, hoc pho
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((thieu xanh) or (thien thanh)) - thanh trung cao trong phong hoc phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu xanh) OR (thien thanh)) - thanh trung cao trong phong hoc phan lap.
• Adding a wildcard symbol may retrieve word variants: toc ((thieu xanh) or (thien thanh)) - thanh trung cao trong phong hoc phan lap*.