Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trinh cua » tinh cua, trinh quan, trinh luan
nho hieu » nha hieu, nho sieu, nhu hieu
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
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: nho hieu lang - hanh ((trinh cua) OR (trinh luat)) nhung cong dan ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nho hieu lang - hanh ((trinh cua) OR (trinh luat)) nhung cong dan ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "nho hieu lang - hanh ((trinh cua) OR (trinh luat)) nhung cong dan ((toan cau) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: nho hieu lang - hanh ((trinh cua) OR (trinh luat)) nhung cong dan ((toan cau) or (toan tap))*.