Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
thuc ban » thuoc ban, thuc dan, thu ban
lang van » dang van, tang van, hoang van
cua tre » cua te, cuu tre, cua triet
thi lan » thi hanh, thi nang, thi lien
lan cac » dan cac, lan dac, gian cac
van hoi » van hoa, van hoc, van hoe
ky lang » ky nang, ky dang, ky tang
tu ban » thu ban, te ban
ve cac » va cac, vien cac
vi cua » vai cua, di cua
vu cac » va cac, tu cac, vu cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu cac) OR (ve cac)) ky lang van hoi. thi lan cac ((tu ban) or (thuc ban)) thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu cac) OR (ve cac)) ky lang van hoi. thi lan cac ((tu ban) OR (thuc ban)) thanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu cac) OR (ve cac)) ky lang van hoi. thi lan cac ((tu ban) or (thuc ban)) thanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((vu cac) OR (ve cac)) ky lang van hoi. thi lan cac ((tu ban) or (thuc ban)) thanh vi cua tre*.