Perhaps you should try some spelling variations:
quang thanh » quan thanh, hoang thanh, muong thanh
theo chieu » theo tieu, theo chu, thi chieu
nhung cong » dung cong, thong cong, hang cong
cong quang » luong quang, thong quang, duong quang
thanh chau » thanh cha, thanh cham, thanh chu
toan quan » doan quang, van quan, toan ban
ho chieu » hoc thieu, doi chieu, mot chieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (theo chieu)) sach - manh ((toan quan) or (tran quang)) nhung cong quang thanh chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - manh ((toan quan) OR (tran quang)) nhung cong quang thanh chau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - manh ((toan quan) or (tran quang)) nhung cong quang thanh chau*".