Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
thanh tung » thanh cong
dung cong » dung trong
qua dung » quang dung, su dung, qua song
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

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