Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
thieu xanh » chieu xanh, thien anh, thien danh
vang quang » van quang, dang quang, vung quang
hieu manh » chieu xanh, hieu nganh, dieu hanh
hang cong » dang cong, hang nong, bang cong
cong vang » cong lang, cong quang, cong ngang
quang cao » nang cao, quang nam, quang cua
tuong va » truong va, thuong va, luong va
va hang » van hang, va nang, va lang

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 (hieu manh)) - thanh tuong va hang cong vang quang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - thanh tuong va hang cong vang quang cao*.