Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, tu cach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
xuc va » duc va, tuc va, luc va
cua te » cua tu
ve cac » va cac
y nang » ky nang, ly nang, v nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (te sach)) y nang xa hoi. hieu ((ve cac) or (vien cac)) xuc va thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) y nang xa hoi. hieu ((ve cac) OR (vien cac)) xuc va thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) y nang xa hoi. hieu ((ve cac) or (vien cac)) xuc va thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) y nang xa hoi. hieu ((ve cac) or (vien cac)) xuc va thanh vi cua te*.