Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
ve cam » ve cac, va cam, ve cai
xuc va » tuc va, luc va, xac va
vi cua » vai cua, di cua
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 sach ky nang x hoi. hieu ((ve cam) OR (ve cham)) ((xuc va) or (duc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. hieu ((ve cam) OR (ve cham)) ((xuc va) OR (duc va)) hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. hieu ((ve cam) OR (ve cham)) ((xuc va) or (duc va)) hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. hieu ((ve cam) OR (ve cham)) ((xuc va) or (duc va)) hanh vi cua tre*.