Perhaps you should try some spelling variations:
thinh sach » chinh sach, tinh sach, sinh sach
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hanh ban » thanh ban, hang ban, hanh san
toan cao » toan ban, toan tap
ban cua » ban quan
tien » tieng, bien, vien

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

• Performing a fuzzy search may retrieve terms with similar spellings: tien thinh sach - hanh ban cua ((nhung cong) or (thong cong)) tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tien thinh sach - hanh ban cua ((nhung cong) OR (thong cong)) tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: tien thinh sach - hanh ban cua ((nhung cong) or (thong cong)) tinh toan cao*.