Perhaps you should try some spelling variations:
hanh tung » thanh tung, manh tung, hanh dung
dung cong » dung trong
theo cau » theo chu, theo cap, theo dau
cau sach » cao sach, hau sach, rau sach
anh tang » anh bang, anh dang, anh nang
cua dung » cua dang, cua dong, qua dung
van tan » van tuan, van tai, van thanh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo cau sach - ((hanh tung) or (anh tang)) cua dung cong ((van tan) or (van ban)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo cau sach - ((hanh tung) OR (anh tang)) cua dung cong ((van tan) OR (van ban)) cau.
• Adding a wildcard symbol may retrieve word variants: theo cau sach - ((hanh tung) or (anh tang)) cua dung cong ((van tan) or (van ban)) cau*.