Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoang van » hang va
dung cong » dung trong
anh quang » anh xquang, anh quan, nhanh quang
quang cao » nang cao, quang nam
tran van » luan van
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: ho ((hieu manh) or (chieu tinh)) - hanh ((hoang van) or (tran van)) dung cong anh quang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu tinh)) - hanh ((hoang van) OR (tran van)) dung cong anh quang cao.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu tinh)) - hanh ((hoang van) or (tran van)) dung cong anh quang cao*.