Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
trung hoc » trung quoc
tong cong » trong cong, cong cong, dung cong
anh quang » anh xquang, anh quan, nhanh quang
quang cao » nang cao, quang nam, quang cua
trung ha » trung tam, trung cap
cong anh » cong danh, dong anh, hong anh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - thanh ((trung ha) or (trung hoc)) tong cong anh quang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - thanh ((trung ha) OR (trung hoc)) tong cong anh quang cao*.