Perhaps you should try some spelling variations:
ban hang » ngan hang
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang ma hoa. lieu va cam xuc ((ban hanh) OR (ban hang)) ve ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ma hoa. lieu va cam xuc ((ban hanh) OR (ban hang)) ve ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang ma hoa. lieu va cam xuc ((ban hanh) OR (ban hang)) ve ((cua tre) or (cuu tre))*".