Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
phung cong » nhung cong, phong cong, dung cong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh bang » anh bang, hanh mang, lanh bang
doi hieu » doi chieu, doc hieu, doi hien
bang cac » nang cao, hang ca, dung cac
tuan cau » toan cau, quan cau, thuan cam
tuan cu » tuan tu, quan cua, tuan thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - hanh bang cac ((phung cong) or (nhung chong)) lang ((tuan cau) OR (tuan cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - hanh bang cac ((phung cong) OR (nhung chong)) lang ((tuan cau) OR (tuan cu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi hieu lang - hanh bang cac ((phung cong) or (nhung chong)) lang ((tuan cau) OR (tuan cu))*".