Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
cua nhung » va nhung
cong san » cong tac
than ban » thanh ban, than man, nhuan ban
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sang - ((canh tranh) or (thanh trung)) cua nhung cong san ((than ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - ((canh tranh) OR (thanh trung)) cua nhung cong san ((than ban) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - ((canh tranh) or (thanh trung)) cua nhung cong san ((than ban) or (toan ban))*.