Perhaps you should try some spelling variations:
tran phuong » tran phong, trinh phuong, doan phuong
chieu tach » chiet tach, chieu sach, chiu trach
tran phung » trang phung, tran hung, tran phong
doi chieu » doc hieu, doi chi, mot chieu
cuong tap » luong tap, cong tac, luong tai
quan cau » quang cao, quan ha, quan cua
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu tach - nhanh quang ((tran phung) OR (tran phuong)) cuong tap ((quan cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tach - nhanh quang ((tran phung) OR (tran phuong)) cuong tap ((quan cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu tach - nhanh quang ((tran phung) OR (tran phuong)) cuong tap ((quan cau) or (toan cau))".
• Adding a wildcard symbol may retrieve word variants: doi chieu tach - nhanh quang ((tran phung) OR (tran phuong)) cuong tap ((quan cau) or (toan cau))*.