Perhaps you should try some spelling variations:
trong phung » trong phong, trong hung, trong nhung
chieu sach » chinh sach, chiet tach, chieu sang
phung cong » nhung cong, phong cong, nhung chong
doi chieu » doc hieu, doi chi, mot chieu
anh quang » anh xquang, anh quan, tinh quang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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 sach - ((anh quang) OR (nhanh quang)) trong phung cong tac toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((anh quang) OR (nhanh quang)) trong phung cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((anh quang) OR (nhanh quang)) trong phung cong tac toan cau*.