Perhaps you should try some spelling variations:
ban hanh » ban hang
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
xuc ban » duc ban, cuc ban, quoc ban
ve cam » ve cham, ve cac, va cam
le cuu » le huu, le cau, le cu
le cua » ly cua
x hoi » o hoi, x ho, 5 hoi

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 ky nang ((x hoi) or (xa hoi)). hieu ve cam xuc ban hanh ((le cuu) OR (le cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((x hoi) OR (xa hoi)). hieu ve cam xuc ban hanh ((le cuu) OR (le cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ((x hoi) or (xa hoi)). hieu ve cam xuc ban hanh ((le cuu) OR (le cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ((x hoi) or (xa hoi)). hieu ve cam xuc ban hanh ((le cuu) OR (le cua)) tre*.