Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
van thanh » van tuan
tham soc » cham soc, tham nuoc, thai son
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
cua tre » cua te, cuu tre, cua triet
te cac » tu cac, ve cac, te cao
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: te cac ky dang xa hoi. hieu va tham soc ((van thanh) OR (ban thanh)) vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ky dang xa hoi. hieu va tham soc ((van thanh) OR (ban thanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te cac ky dang xa hoi. hieu va tham soc ((van thanh) OR (ban thanh)) vi cua tre*.