Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
tranh hoac » thanh hoach, thanh hoa, trinh hoa
hoac thong » hoa thong, hoac khong, hoc thong
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
thanh lap » thanh san, phan lap, thanh hai
cong dan » cong san, cong tan, huong dan
than cua » nhan cua, thai cua, ban cua

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 hoac thong cong dan ((than cua) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - canh tranh hoac thong cong dan ((than cua) OR (thanh lap)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - canh tranh hoac thong cong dan ((than cua) or (thanh lap))*.