Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
xay hoi » xa hoi, tay hoi, cay phoi
van lam » van nam
van cua » vang cua, ban cua, dan cua
ky dang » ky nang, ky danh
tuc va » thuc va, truc va, tuc xa
su cac » tu cac, su cao, su can
luc va » duc va, loc va
xuc va » duc va, xac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ky dang xay hoi. hieu van lam ((((xuc va) OR (luc va))) or (tuc va)) thanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ky dang xay hoi. hieu van lam ((((xuc va) OR (luc va))) OR (tuc va)) thanh van cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ky dang xay hoi. hieu van lam ((((xuc va) OR (luc va))) or (tuc va)) thanh van cua tre".
• Adding a wildcard symbol may retrieve word variants: su cac ky dang xay hoi. hieu van lam ((((xuc va) OR (luc va))) or (tuc va)) thanh van cua tre*.