Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
cong thong » cong thuong, cong trong, dong thong
trung cua » truong cua, trung tuan, trung cap
thong dan » thong van, tuong dan, thong den
ho chieu » theo chieu, hoc thieu, doi chieu
than cap » khan cap, thanh lap, thanh cac
khan ap » khan cap, han ap, khan dam

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