Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
tran tuyet » trang tuyen, ban tuyet, rang tuyet
tao tuyet » thi tuyet, dao tuyen, ba tuyet
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu tinh) or (chieu sach)) - thanh ((tran tuyet) OR (tao tuyet)) dung cong tan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (chieu sach)) - thanh ((tran tuyet) OR (tao tuyet)) dung cong tan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu tinh) or (chieu sach)) - thanh ((tran tuyet) OR (tao tuyet)) dung cong tan toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) or (chieu sach)) - thanh ((tran tuyet) OR (tao tuyet)) dung cong tan toan tap*.