Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
va thanh » gia thanh, ban thanh, va tinh
thu san » thuy san, thu ban, phu san
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
san ky » sang ky, van ky, dan ky
cac co » cac cong
cac lo » cac lop, cac bo, cac ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu san ky nang xa hoi. ((hieu va) or (hieu qua)) ((cac lo) OR (cac co)) va thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu san ky nang xa hoi. ((hieu va) OR (hieu qua)) ((cac lo) OR (cac co)) va thanh hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu san ky nang xa hoi. ((hieu va) or (hieu qua)) ((cac lo) OR (cac co)) va thanh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: thu san ky nang xa hoi. ((hieu va) or (hieu qua)) ((cac lo) OR (cac co)) va thanh hai cua tre*.