Perhaps you should try some spelling variations:
hanh tung » thanh tung, manh tung, hanh dung
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
anh tang » anh bang, anh dang, anh nang
cua dung » cua dang, cua dong, qua dung
cong van » cong vang, cong san, song van
ban cau » bang cau, ban can, van cau

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

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