Perhaps you should try some spelling variations:
chieu tinh » lieu tinh, chau tinh, kieu tinh
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
cong san » cong tac
san phan » san pham, van phan, sat phan
tung he » dung he, tung ho, tang he

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 tinh) or (trieu tinh))) or (chieu sach)) - thanh tung he thong cong san phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((((chieu tinh) OR (trieu tinh))) OR (chieu sach)) - thanh tung he thong cong san phan tu.
• Adding a wildcard symbol may retrieve word variants: doi ((((chieu tinh) or (trieu tinh))) or (chieu sach)) - thanh tung he thong cong san phan tu*.