Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
trinh phan » trinh han, trinh quan, thanh phan
thanh tra » thanh toan, thanh hoa
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
tra tuan » tran tuan, tra quan, tri tuan
phan cau » phan dau, phan cac, phan tu

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 - thanh tra tuan ((hang cong) or (dang cong)) trinh phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - thanh tra tuan ((hang cong) OR (dang cong)) trinh phan cau.
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - thanh tra tuan ((hang cong) or (dang cong)) trinh phan cau*.