Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
cau thuc » cau truc, cuu thuc, can thuc
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
sach ky » sach y, sach ty, sach kem
thuc va » thuc vat, thuc dan, thuc day
va cau » van cau, va cac, va dau
sac ky » cac ky, sai ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sac ky)) lang xa hoi. hieu va cau thuc va hanh vai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) lang xa hoi. hieu va cau thuc va hanh vai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) lang xa hoi. hieu va cau thuc va hanh vai ((cua tre) or (cua te))*.