Perhaps you should try some spelling variations:
qua tham » qua cham, qua than, qua thanh
tham soc » cham soc, tham nuoc, thai son
lang xa » dang xay, lang van
lang ha » long ha
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
soc va » hoc va, loc va, doc 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: ve cac ky ((lang xa) or (lang ha)) hoi. hieu qua tham soc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ve cac ky ((lang xa) OR (lang ha)) hoi. hieu qua tham soc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ve cac ky ((lang xa) or (lang ha)) hoi. hieu qua tham soc va hanh vi cua tre*.