Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trinh van » trinh han, trinh quan, trinh toan
doc hieu » hoc thieu, hoc hien
trinh va » trinh vat, trinh ve, trinh vi
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan tap » toan ban

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) or (toc thieu)) sach - hanh ((trinh va) or (trinh van)) nhung cong van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) sach - hanh ((trinh va) OR (trinh van)) nhung cong van toan tap.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (toc thieu)) sach - hanh ((trinh va) or (trinh van)) nhung cong van toan tap*.