Perhaps you should try some spelling variations:
truong quang » truong quan, luong quang, thong quang
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
cong manh » cong danh, duong manh, cong thanh
toan cao » toan tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sang - thanh ((truong quang) or (trung tuan)) nhung cong manh ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - thanh ((truong quang) OR (trung tuan)) nhung cong manh ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sang - thanh ((truong quang) or (trung tuan)) nhung cong manh ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - thanh ((truong quang) or (trung tuan)) nhung cong manh ((toan cao) OR (toan ban))*.