Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
va thanh » gia thanh, ban thanh, va tinh
cac thuc » cach thuc, can thuc, cay thuc
so sach » bo sach, co sach, hoc sach
cac thu » cach thuc, cac thoi
hieu va » lieu va, hieu qua
so sanh » do sanh
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
ve cua » le cua, de cua, te cua
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: ((so sach) or (so sanh)) y nang xa hoi. hieu va ((cac thuc) OR (cac thu)) va thanh ve cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) y nang xa hoi. hieu va ((cac thuc) OR (cac thu)) va thanh ve cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (so sanh)) y nang xa hoi. hieu va ((cac thuc) OR (cac thu)) va thanh ve cua te".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) y nang xa hoi. hieu va ((cac thuc) OR (cac thu)) va thanh ve cua te*.