Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
long range » longer range, long ran
trung thi » truong thi, trong thi, trung tri
long than » song than, luong thanh, dong thanh
thanh mau » hanh mau, thanh san, thanh hai
ho chieu » theo chieu, hoc thieu, mot chieu

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 thi thanh ((long range) or (long than)) thanh mau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh trung thi thanh ((long range) OR (long than)) thanh mau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung thi thanh ((long range) or (long than)) thanh mau*.