Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
hieu van » hieu va, thien van, lieu va
hanh hai » nhanh hai, hang hai, hanh tai
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
cac xuc » cac nuoc, chat xuc, cac cuoc
nang xa » nang x, lang xa, nang ma

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