Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
van hanh » van thanh, ban hanh, van anh
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
lang hoa » hang hoa, lang ha, nang hoa
cham xuc » cam xuc, chat xuc, cham soc
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky lang » ky nang, ky dang, ky tang
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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) OR (toc sach)) ky lang hoa hoi. hieu qua cham xuc ((va thanh) or (van hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky lang hoa hoi. hieu qua cham xuc ((va thanh) OR (van hanh)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ky lang hoa hoi. hieu qua cham xuc ((va thanh) or (van hanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ky lang hoa hoi. hieu qua cham xuc ((va thanh) or (van hanh)) vi cua tre*.