Perhaps you should try some spelling variations:
kham soc » cham soc, kham cuoc, ham so
hieu va » lieu va, hieu qua
van anh » van thanh, tuan anh, van minh
soc van » hoc van, oc van, sac van
va kham » va cham, va khao, va tham
lang ha » long ha
cua tre » cua te, cuu tre, cua triet
anh va » hanh va
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sanh) OR (do sanh)) ty ((nang cao) or (lang ha)) hoi. hieu va kham soc van anh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sanh) OR (do sanh)) ty ((nang cao) OR (lang ha)) hoi. hieu va kham soc van anh va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sanh) OR (do sanh)) ty ((nang cao) or (lang ha)) hoi. hieu va kham soc van anh va cua tre".
• Adding a wildcard symbol may retrieve word variants: ((so sanh) OR (do sanh)) ty ((nang cao) or (lang ha)) hoi. hieu va kham soc van anh va cua tre*.