Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cac thuc » cach thuc, cac thu, can thuc
thuc gia » thuc giai, thue gia, thuc dia
thanh vi » hanh vi, thanh va, nhanh vi
thanh ve » hanh ve, thanh va, thanh vien
co sach » bo sach, cuon sach, hoc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cu tren » tu tren, dua tren
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: co sach y nang xa hoi. hieu va cac thuc gia ((thanh vi) OR (thanh ve)) ((cu tren) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach y nang xa hoi. hieu va cac thuc gia ((thanh vi) OR (thanh ve)) ((cu tren) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach y nang xa hoi. hieu va cac thuc gia ((thanh vi) OR (thanh ve)) ((cu tren) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: co sach y nang xa hoi. hieu va cac thuc gia ((thanh vi) OR (thanh ve)) ((cu tren) or (cua triet))*.