Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
sach ty » sach y, sach tu, sach thu
danh vi » dinh vi, danh di, danh va
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cac » va cac
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: vu sach ty nang xa hoi. hieu ((ve cac) OR (vien cac)) xuc va ((danh vi) or (hanh vi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang xa hoi. hieu ((ve cac) OR (vien cac)) xuc va ((danh vi) OR (hanh vi)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang xa hoi. hieu ((ve cac) OR (vien cac)) xuc va ((danh vi) or (hanh vi)) cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang xa hoi. hieu ((ve cac) OR (vien cac)) xuc va ((danh vi) or (hanh vi)) cua te*.