Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
tham loc » tham nuoc, cham soc, hau loc
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
danh vi » hanh vi, danh di, danh va
dinh vi » dinh ve, dinh viet, dinh tri
cua tre » cua te, cuu tre, cua triet
te cac » tu cac, ve cac, te cao
loc va » hoc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cac ((ky lang) OR (ky dang)) xa hoi. hieu van tham loc va ((danh vi) or (dinh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ((ky lang) OR (ky dang)) xa hoi. hieu van tham loc va ((danh vi) OR (dinh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ((ky lang) OR (ky dang)) xa hoi. hieu van tham loc va ((danh vi) or (dinh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te cac ((ky lang) OR (ky dang)) xa hoi. hieu van tham loc va ((danh vi) or (dinh vi)) cua tre*.