Perhaps you should try some spelling variations:
tranh quang » tran quang, tinh quang, trinh quan
trinh quang » tinh quang, trinh quan, trinh dung
chieu sach » chinh sach, chieu sang, chieu xanh
hung cong » nhung cong, hung cuong, phung cong
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu

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 sach) OR (chiet tach)) - hanh ((trinh quang) or (tranh quang)) hung cong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - hanh ((trinh quang) OR (tranh quang)) hung cong san phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chiet tach)) - hanh ((trinh quang) or (tranh quang)) hung cong san phan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chiet tach)) - hanh ((trinh quang) or (tranh quang)) hung cong san phan cau*.