Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
day cua » dai cua
dan day » da day, dan dat, dan da
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
hieu vu » hieu ve, hieu su, dieu vu
mai hoi » mai khoi, dai hoi, lai hoi
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
ma hoi » xa hoi, ma hoa, me hoi

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