Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thieu sach » chieu sach, thien hach, hieu cach
trung tuan » trung thanh, tran tuan, truong thanh
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: toc ((thieu sach) or (thien thanh)) - hanh ((trung tuan) or (trung tam)) dung cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu sach) OR (thien thanh)) - hanh ((trung tuan) OR (trung tam)) dung cong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: toc ((thieu sach) or (thien thanh)) - hanh ((trung tuan) or (trung tam)) dung cong tan toan ban*.