Perhaps you should try some spelling variations:
anh quang » anh xquang, anh quan, tinh quang
tran hung » tran hong, tran quang, tran hoang
hung cong » nhung cong, hung cuong, phung cong
chi sach » chinh sach, chieu sach, co sach
cong tac » cong ty
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi sach - ((anh quang) or (nhanh quang)) tran hung cong tac ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sach - ((anh quang) OR (nhanh quang)) tran hung cong tac ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doi chi sach - ((anh quang) or (nhanh quang)) tran hung cong tac ((toan cau) or (toan ban))*.