Perhaps you should try some spelling variations:
phung cong » nhung cong, phong cong, nhung chong
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
cua phung » cua phuong, cua nhung, cua chung
hanh ban » thanh ban, hang ban, hanh san
cong dan » cong san, cong tan, huong dan
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
ban cua » ban quan

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 - hanh ban cua phung cong dan ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - hanh ban cua phung cong dan ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - hanh ban cua phung cong dan ((toan cau) or (toan cao))*.