Perhaps you should try some spelling variations:
dung cong » dung trong
chi xanh » chi anh, chi danh, chieu xanh
chi hanh » chi nhanh, chi thanh, thi hanh
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
toan va » doan va, tran van, toan ban
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chi xanh) or (chi hanh)) - tinh toan va dung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi xanh) OR (chi hanh)) - tinh toan va dung cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chi xanh) or (chi hanh)) - tinh toan va dung cong dan toan cau*.