Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
trung cong » truong cong, trong cong, trung uong
danh thanh » dinh thanh, dang thanh, nhanh thanh
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cua trung » cua truong, xuan trung, cua nhung
dan thanh » dang thanh, ban thanh, van thanh

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 quang - canh tranh cua trung cong ((dan thanh) or (danh thanh)) lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu quang - canh tranh cua trung cong ((dan thanh) OR (danh thanh)) lap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - canh tranh cua trung cong ((dan thanh) or (danh thanh)) lap*.