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
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
tung tac » tuong tac, ung tac, trung tam
tac dung » sach dung, xay dung, tin dung
van tuan » van quan, van ban, anh tuan

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 tac dung cong ((manh toan) or (van tuan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - thanh tung tac dung cong ((manh toan) OR (van tuan)) cao.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu sang)) - thanh tung tac dung cong ((manh toan) or (van tuan)) cao*.