Perhaps you should try some spelling variations:
quang trong » quang truong, quang trung, quan trong
theo chieu » theo tieu, theo chu, thi chieu
cong quang » luong quang, thong quang, duong quang
dang cong » dung cong
trong ban » trong san, trong tan, trong quan
ho chieu » hoc thieu, mot chieu, doi chieu
anh hung » anh huong, manh hung, anh dung
hung cua » huong cua, chung cua, khung cua
cua dang » cua cong, cua ban

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)) tinh - anh hung cua dang cong quang trong ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) tinh - anh hung cua dang cong quang trong ban*.