Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
kho tang » cao tang
cham xuc » cam xuc, chat xuc, cham soc
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
cua tre » cua te, cuu tre, cua triet
van hoi » van hoa, van hoc, van hoe
ky tang » ky nang, ky dang, ky trong
de cua » le cua, te cua, dieu cua
vu sac » vu sach, vu san, va sac

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ((ky tang) OR (kho tang)) van hoi. hieu qua cham xuc ((va danh) or (va hanh)) de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ((ky tang) OR (kho tang)) van hoi. hieu qua cham xuc ((va danh) OR (va hanh)) de cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ((ky tang) OR (kho tang)) van hoi. hieu qua cham xuc ((va danh) or (va hanh)) de cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sac ((ky tang) OR (kho tang)) van hoi. hieu qua cham xuc ((va danh) or (va hanh)) de cua tre*.