Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
su sach » so sach, vu 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 cam » qua cac, qua ca, qua cai
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
xuc va » tuc va, luc va, xac va
vi cua » vai cua, di cua

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

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