Perhaps you should try some spelling variations:
chiet tach » chieu sach
chieu sang » chieu sach, chieu xanh, nhieu tang
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hieu lang » hieu quang, nhieu tang, hieu van
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu
tung va » trung va, tuong va, dung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chiet tach) or (((hieu lang) OR (chieu sang)))) - thanh tung va nhung cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (((hieu lang) OR (chieu sang)))) - thanh tung va nhung cong dan phan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chiet tach) or (((hieu lang) OR (chieu sang)))) - thanh tung va nhung cong dan phan cau*".