Perhaps you should try some spelling variations:
khang cong » hang cong, thanh cong, dang cong
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
thanh tam » thanh tai, thanh tay, thanh nam
van khang » van khanh, van thanh, van quang
hanh dam » thanh dam, hanh lam, hanh nam
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) OR (nhieu tang)) - ((hanh dam) or (thanh tam)) van khang cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (nhieu tang)) - ((hanh dam) OR (thanh tam)) van khang cong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) OR (nhieu tang)) - ((hanh dam) or (thanh tam)) van khang cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) OR (nhieu tang)) - ((hanh dam) or (thanh tam)) van khang cong dan toan tap*.