Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thu sac » thu sach, thu san, thu xac
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
luc va » duc va, tuc va
loc va » hoc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky nang xa hoi. hieu ve cac ((luc va) or (loc va)) thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky nang xa hoi. hieu ve cac ((luc va) OR (loc va)) thanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sac ky nang xa hoi. hieu ve cac ((luc va) or (loc va)) thanh hai cua tre*.