Perhaps you should try some spelling variations:
van thanh » ban thanh
cham xuc » cam xuc, chat xuc, cham soc
thu sach » tu sach, thuat sach, thuoc sach
van tuan » van quan, van ban, anh tuan
thu sac » thu san, thu xac, thu dac
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
tang ha » lang ha, tang ma, trung ha
ky tang » ky nang, ky dang, kho tang
cua tre » cua te, cuu tre, cua triet
ve cua » le cua, de cua, te 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 sac) or (thu sach)) ky tang ha noi. hieu vu cham xuc ((van thanh) OR (van tuan)) ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sac) OR (thu sach)) ky tang ha noi. hieu vu cham xuc ((van thanh) OR (van tuan)) ve cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sac) or (thu sach)) ky tang ha noi. hieu vu cham xuc ((van thanh) OR (van tuan)) ve cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sac) or (thu sach)) ky tang ha noi. hieu vu cham xuc ((van thanh) OR (van tuan)) ve cua tre*.