Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nhanh ha
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
hai cua » thai cua, dai cua, hoi cua
sach ky » sac ky, sach y, sach ty
van cac » van hac, van cau, van bac
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
ma hoi » mai hoi, ma hoa, me hoi
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: su sach ky nang ((ma hoi) or (xa hoi)). hieu van cac ((xuc va) OR (luc va)) nhanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((ma hoi) OR (xa hoi)). hieu van cac ((xuc va) OR (luc va)) nhanh hai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ((ma hoi) or (xa hoi)). hieu van cac ((xuc va) OR (luc va)) nhanh hai cua te*".