Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
cho nhung » cho chuong, cua nhung, thi nhung
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: theo ((hieu lang) or (chieu sang)) - ((ung dung) or (anh huong)) cho nhung cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (chieu sang)) - ((ung dung) OR (anh huong)) cho nhung cong dan toan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) or (chieu sang)) - ((ung dung) or (anh huong)) cho nhung cong dan toan tap*.