Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
va thanh » gia thanh, ban thanh, va tinh
ban hanh » ban hang
te sach » toc sach
nang xa » nang x, lang xa, nang ma
cau tre » cau tren, cau treo, cau tra
y nang » ky nang, ly nang, v nang
ve cac » va cac
da cau » dat cau, va cau

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

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