Perhaps you should try some spelling variations:
chat xuc » chat huu, cam xuc, chao xu
tang mai » tang ma, tang tai, lang mai
van hanh » van thanh, ban hanh, van anh
sach ky » sac ky, sach y, sach ty
cua tre » cuu tre, cua triet, dua tren
va hanh » va thanh, va danh, ban hanh
tu sach » thu sach, su sach, te sach
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
ky tang » ky nang, ky dang, kho tang
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 tang mai hoi. hieu va chat xuc ((va hanh) or (van hanh)) vi ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky tang mai hoi. hieu va chat xuc ((va hanh) OR (van hanh)) vi ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky tang mai hoi. hieu va chat xuc ((va hanh) or (van hanh)) vi ((cua tre) OR (cua te))*".