Perhaps you should try some spelling variations:
ban banh » ban hanh, ban anh, ban danh
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
banh va » ban va, hanh va, anh va
va tinh » may tinh
tinh vi » trinh vi, tinh voi, tinh va
y nang » ky nang, ly nang, v nang
ve ban » te ban, va ban, ve bao
x hoi » xa hoi, o hoi, x ho
vi va » vi van, vai va, vu va
thiet » thieu

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 y nang x hoi. hieu ve ban banh va tinh vi va thiet~.
• Adding a wildcard symbol may retrieve word variants: su sach y nang x hoi. hieu ve ban banh va tinh vi va thiet*.