Perhaps you should try some spelling variations:
thanh trung » thanh tung
cdieu hanh » chieu xanh, deu hanh, dieu danh
chieu sach » chinh sach, chiet tach, chieu sang
trung chan » trung phan, trong chan, trung can
chan dung » van dung, dan dung
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((dieu hanh) or (((cdieu hanh) or (chieu sach)))) - thanh trung chan dung cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((dieu hanh) OR (((cdieu hanh) OR (chieu sach)))) - thanh trung chan dung cong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: doc ((dieu hanh) or (((cdieu hanh) or (chieu sach)))) - thanh trung chan dung cong tan toan ban*.