Perhaps you should try some spelling variations:
vinh dieu » tinh dien, vi dieu, kinh dien
dieu cua » dieu tra
su sach » vu sach
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, dan cac
van bac » van ban, van bao, van hac
va vinh » van vinh, va kinh, va tinh
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
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) OR (so sach)) y nang xa hoi. hieu ((van cac) or (van bac)) xuc va vinh dieu cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) y nang xa hoi. hieu ((van cac) OR (van bac)) xuc va vinh dieu cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) y nang xa hoi. hieu ((van cac) or (van bac)) xuc va vinh dieu cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) y nang xa hoi. hieu ((van cac) or (van bac)) xuc va vinh dieu cua te*.