Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
cong thong » cong thuong, cong trong, dong thong
trung cua » truong cua, trung tuan, trung cap
thong dan » thong van, tuong dan, thong den
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, hang dau

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