Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
sang than » cang thang, dang thanh, sang tao
tung cua » trung cua, tuong cua, dung cua
san than » san thanh, ban than, van than

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 - thanh ((tung cua) or (dung luan)) nhung cong ((san than) OR (sang than)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - thanh ((tung cua) OR (dung luan)) nhung cong ((san than) OR (sang than)) cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo hieu lang - thanh ((tung cua) or (dung luan)) nhung cong ((san than) OR (sang than)) cap".
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - thanh ((tung cua) or (dung luan)) nhung cong ((san than) OR (sang than)) cap*.