Perhaps you should try some spelling variations:
phan truong » phan thuong, pham truong, phan trong
hanh thanh » nhanh thanh, thanh thanh, khanh thanh
thanh phan » thanh pho, thanh san, thanh toan
hieu sach » chieu sach, hieu cach, dien sach
doc hieu » toc thieu, hoc thieu, hoc hien
cong tac » cong ty
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: doc hieu sach - hanh thanh phan truong ((huong dan) or (cong tac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - hanh thanh phan truong ((huong dan) OR (cong tac)) toan cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - hanh thanh phan truong ((huong dan) or (cong tac)) toan cau*.