Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
chat xuc » chat huu, chao xu, chat cua
su sach » so sach, vu sach
cam dan » cac dan, ca dan, nam dan
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
cac xuc » cac nuoc, cac cuoc, cac quoc
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
dan vi » doan vi, don vi, dan 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 vien ((cac xuc) or (((chat xuc) OR (cam xuc)))) cam dan vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu vien ((cac xuc) OR (((chat xuc) OR (cam xuc)))) cam dan vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu vien ((cac xuc) or (((chat xuc) OR (cam xuc)))) cam dan vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu vien ((cac xuc) or (((chat xuc) OR (cam xuc)))) cam dan vi cua tre*.