Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
cuu phuong » cac phuong
thu phuong » thi phuong, thu huong, theo phuong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
than cau » phan cau, than cap, thanh chau
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: ho chieu sach - thanh trung ((cuu phuong) or (thu phuong)) cong tac ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung ((cuu phuong) OR (thu phuong)) cong tac ((than cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung ((cuu phuong) or (thu phuong)) cong tac ((than cau) or (toan cau))*.