Perhaps you should try some spelling variations:
kham xuc » kham xung, kham cuoc, cam xuc
te sach » toc sach
hieu va » lieu va, hieu qua
dau cua » dai cua, day cua, cau cua
dan dau » danh dau, doan dau, van dau
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
hieu vu » hieu ve, hieu su, dieu vu
dai hoi » dai hoc, dai hai, dai moi
mai hoi » mai khoi, lai hoi, mai doi
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ((mai hoi) OR (dai hoi)). ((hieu vu) or (hieu va)) kham xuc va dan dau cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((mai hoi) OR (dai hoi)). ((hieu vu) OR (hieu va)) kham xuc va dan dau cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((mai hoi) OR (dai hoi)). ((hieu vu) or (hieu va)) kham xuc va dan dau cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((mai hoi) OR (dai hoi)). ((hieu vu) or (hieu va)) kham xuc va dan dau cua tre*.