Perhaps you should try some spelling variations:
qua cham » qua cac, va cham, qua cua
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
qua hai » qua hoat
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
xuc va » tuc va, luc va, xac va
di cua » dai cua, doi cua, de cua

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 ty nang xa hoi. hieu ((qua cham) OR (qua hai)) ((xuc va) or (duc va)) hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu ((qua cham) OR (qua hai)) ((xuc va) OR (duc va)) hanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu ((qua cham) OR (qua hai)) ((xuc va) or (duc va)) hanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu ((qua cham) OR (qua hai)) ((xuc va) or (duc va)) hanh di cua tre*.