Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
tang cua » mang cua, hang cua, tang luan
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
hang ca » hang va, nang cao, hang tai
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((diep tinh) or (chieu sach)) - hanh ((tang cua) or (hang ca)) nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((diep tinh) OR (chieu sach)) - hanh ((tang cua) OR (hang ca)) nhung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((diep tinh) or (chieu sach)) - hanh ((tang cua) or (hang ca)) nhung cong tac toan cau*.