Perhaps you should try some spelling variations:
chua nang » chua xang, kha nang, cuu nang
dung cong » dung trong
tang van » dang van, hoang van, trong van
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
tang va » trang va, thang va, tang vat
chuc » thuc, chu, phuc

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

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