Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh va » thanh van, hanh va, thanh ha
san khoa » toan khoa, hang khoa, da khoa
vu kham » vu khanh
xuc van » duc van, luc van, vuc van
vu cham » va cham, tu cham, qua cham
san kho » san cho, lan kho, san ho
tang ha » lang ha, tang ma, trung ha
cua tre » cua te, cuu tre, cua triet
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: thu ((san kho) OR (san khoa)) tang ha noi. hieu ((vu cham) or (vu kham)) xuc van thanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((san kho) OR (san khoa)) tang ha noi. hieu ((vu cham) OR (vu kham)) xuc van thanh va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((san kho) OR (san khoa)) tang ha noi. hieu ((vu cham) or (vu kham)) xuc van thanh va cua tre".
• Adding a wildcard symbol may retrieve word variants: thu ((san kho) OR (san khoa)) tang ha noi. hieu ((vu cham) or (vu kham)) xuc van thanh va cua tre*.