Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
lang hoa » hang hoa, lang ha, nang hoa
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va danh, ban hanh
te sach » toc sach
hai xuc » hai cuc, hai xu, chat xuc
qua hai » qua hoat
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky lang » ky nang, ky dang, ky tang
cuu tre » cau tren, cau treo

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