Perhaps you should try some spelling variations:
qua sinh » qua kinh, cua sinh, qua ninh
sinh dai » sinh thai, si dai, sinh vat
vu sach » vu bach, su sach, vu khach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cau luc » cau truc, cau phuc
luc qua » luc quan, luc cua, luc nua
cua tre » cuu tre, cua triet, dua tren
ve cau » ke cau, va cau, ve cac
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) or (te sach)) ky nang xa hoi. hieu ve cau luc qua sinh dai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (te sach)) ky nang xa hoi. hieu ve cau luc qua sinh dai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (te sach)) ky nang xa hoi. hieu ve cau luc qua sinh dai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (te sach)) ky nang xa hoi. hieu ve cau luc qua sinh dai ((cua tre) OR (cua te))*.