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
trung cua » truong cua, trung tuan, trung cap
tung cua » tuong cua, tang cua, cung cua
dung cua » dung luan, dung cho
cong san » cong tac
san than » sang than, san thanh, ban than
than cap » khan cap, thanh lap, thanh cac

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