Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chiet tach » chieu sach
thanh tung » thanh cong
dung cong » dung trong
san thanh » ban thanh, van thanh, son thanh
tung cao » nung cao, truong cao, trung cap
cao dung » cao dang, cao dong, cao ung
san than » sang than, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu xanh) or (chiet tach)) - thanh tung cao dung cong ((san than) OR (san thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chiet tach)) - thanh tung cao dung cong ((san than) OR (san thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (chiet tach)) - thanh tung cao dung cong ((san than) OR (san thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chiet tach)) - thanh tung cao dung cong ((san than) OR (san thanh)) cau*.