Perhaps you should try some spelling variations:
hanh tung » thanh tung, manh tung, hanh dung
phong van » phung van, thong van, phong va
anh tang » anh bang, anh dang, anh nang
tu phong » tu phuong, tuc phong, tuy phong
chao ho » cho ho, chao chao, chat hoa
van van » tan van, san van, van vat
cua tu » cua tuc, cua su, cua cu

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

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