Perhaps you should try some spelling variations:
danh doi » danh di, thanh doi, dung doi
cua tre » cua te, cuu tre, cua triet
doi cua » dai cua, hoi cua
hieu ve » hieu va, hieu van
te sach » toc sach
ve cac » va cac, vien cac
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
te sac » te cac, te san
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sac) or (te sach)) ky nang x hoi. hieu ve cac ((xuc va) OR (tuc va)) danh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te sach)) ky nang x hoi. hieu ve cac ((xuc va) OR (tuc va)) danh doi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) or (te sach)) ky nang x hoi. hieu ve cac ((xuc va) OR (tuc va)) danh doi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te sach)) ky nang x hoi. hieu ve cac ((xuc va) OR (tuc va)) danh doi cua tre*.