Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
chao chu » cho chu, cua chu, cao cho
chu sach » cau sach, thu sach, chieu sach
tac toan » tap toan, tam toan, hach toan
toan cau » 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: chao chu sach - ((canh tranh) or (hanh trinh)) va ((nhung cong) or (thong cong)) tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao chu sach - ((canh tranh) OR (hanh trinh)) va ((nhung cong) OR (thong cong)) tac toan cau.
• Adding a wildcard symbol may retrieve word variants: chao chu sach - ((canh tranh) or (hanh trinh)) va ((nhung cong) or (thong cong)) tac toan cau*.