Perhaps you should try some spelling variations:
chiet tach » chieu sach
lieu tinh » trieu tinh, diep tinh, bien tinh
cua khong » hua khong, cua phuong, cua thuong
cua nong » cua cong, cuu nong, cua dong
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: ho ((lieu tinh) or (chiet tach)) - hanh chinh ((cua nong) or (cua khong)) cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((lieu tinh) OR (chiet tach)) - hanh chinh ((cua nong) OR (cua khong)) cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((lieu tinh) or (chiet tach)) - hanh chinh ((cua nong) or (cua khong)) cong tac toan cau*.