Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
cua triet » cua viet, su triet, va triet
thuc gia » thuc giai, thue gia, thuc dia
thanh vi » hanh vi, thanh va, thanh ve
cau tren » cu tren, dau tren, ca tren
so sach » so sanh, bo sach, hoc sach
co sach » bo sach, cuon sach, hoc sach
nang xa » nang x, lang xa, nang ma
va cach » 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: ((so sach) OR (co sach)) y nang xa hoi. lieu va cach thuc gia thanh vi ((cau tren) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) y nang xa hoi. lieu va cach thuc gia thanh vi ((cau tren) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (co sach)) y nang xa hoi. lieu va cach thuc gia thanh vi ((cau tren) or (cua triet))*".