Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
chieu sang » chieu sach, chieu xanh, hieu lang
phan thanh » pham thanh, ban thanh, van thanh
dong thanh » truong thanh
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 nganh) or (chieu sang)) - phan thanh van dung dong thanh san tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (chieu sang)) - phan thanh van dung dong thanh san tap.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) or (chieu sang)) - phan thanh van dung dong thanh san tap*.