Perhaps you should try some spelling variations:
phan thanh » pham thanh, ban thanh, van thanh
chieu sach » chinh sach, chiet tach, chieu sang
dong thanh » truong thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
thanh van » thanh toan, thanh phan, thanh nhan
dung dong » dung cong, vung dong, dung trong
van dung » van dong, xay dung, tin dung
san tap » han tap, man tap, san tay

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 manh) or (chieu sach)) - phan thanh van dung dong thanh san tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu manh) OR (chieu sach)) - phan thanh van dung dong thanh san tap.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu manh) or (chieu sach)) - phan thanh van dung dong thanh san tap*.