Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
chua xang » chua nang, chuc nang, chua dong
tang luan » dung luan
dung cong » dung trong
vinh toan » tinh toan, hinh toan, minh toan
chu bang » thu bang, chuc nang, chu quang
anh tang » anh bang, anh dang, anh nang
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: theo ((chua xang) or (chu bang)) - anh tang luan ((nhung cong) OR (dung cong)) vinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (chu bang)) - anh tang luan ((nhung cong) OR (dung cong)) vinh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua xang) or (chu bang)) - anh tang luan ((nhung cong) OR (dung cong)) vinh toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) or (chu bang)) - anh tang luan ((nhung cong) OR (dung cong)) vinh toan cao*.