Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
thang cong » thanh cong, thang long, thong cong
nam thang » nam thanh, nam trong, nam trung
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tran tan » tran tuan, tran van, tran thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - ((thanh trung) or (canh tranh)) nam thang cong tan tran tan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((thanh trung) OR (canh tranh)) nam thang cong tan tran tan.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((thanh trung) or (canh tranh)) nam thang cong tan tran tan*.