Perhaps you should try some spelling variations:
hanh hang » thanh hang, hang hang, hanh han
dung cong » dung trong
hang vat » hang va, dang vat, bang vat
vat dung » van dung, va dung, viet dung
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan ban » tuan bang, toan ban, luan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc thieu) or (hoc hien)) cach - hanh hang vat dung cong van tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc thieu) OR (hoc hien)) cach - hanh hang vat dung cong van tuan ban*.