Perhaps you should try some spelling variations:
ban hanh » ban hang
hanh tai » thanh tai, hang tai, han tai
sach ky » sac ky, sach y, sach ty
cua tre » cua triet, dua tren, cua thep
tu sach » thu sach, su sach, te sach
cuc ban » cua ban, cac ban, cuu ban
cam cuc » cam xuc, cham cuu, pham cuc
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
cuu tre » cau tren, cau treo
ve cam » ve cham, ve cac, va cam
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 nang ma hoa. hieu ve cam cuc ban hanh tai ((((cua tre) OR (cua te))) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoa. hieu ve cam cuc ban hanh tai ((((cua tre) OR (cua te))) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ma hoa. hieu ve cam cuc ban hanh tai ((((cua tre) OR (cua te))) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoa. hieu ve cam cuc ban hanh tai ((((cua tre) OR (cua te))) or (cuu tre))*.