Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
thanh tung » thanh cong
cao trong » cao truong, cay trong, tao trong
tung cao » nung cao, truong cao, trung cap
dan phan » doan phan, van phan, dam phan
dan chan » dan gian, dan ca, van chat

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 sach) or (chieu sang)) - thanh tung cao trong cong ((dan phan) or (dan chan)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - thanh tung cao trong cong ((dan phan) OR (dan chan)) cac.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu sang)) - thanh tung cao trong cong ((dan phan) or (dan chan)) cac*.