Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hoang van » hang va
lang van » dang van, tang van, giang van
cac thuc » cach thuc, cac thu, can thuc
thuc ban » thuoc ban, thuc dan, thu ban
thanh vi » hanh vi, thanh va, thanh ve
thi lan » thi hanh, thi nang, thi lien
lan cac » dan cac, lan dac, gian cac
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky ((lang van) or (hoang van)) hoe. thi lan cac thuc ban thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky ((lang van) OR (hoang van)) hoe. thi lan cac thuc ban thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu cac ky ((lang van) or (hoang van)) hoe. thi lan cac thuc ban thanh vi cua tre*.