Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
phan thanh » pham thanh, ban thanh, van thanh
dong duong » tuong duong, cuong duong, dong thong
thanh van » thanh san, thanh toan, thanh phan
duong van » duong va, luong va, dang van
van tan » van tuan, van ban, van tai
tan tap » toan tap, han tap, tan tat

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