Perhaps you should try some spelling variations:
sach duoc » sach nuoc, sach dao, sach dung
cua triet » cua viet, su triet, va triet
bac thua » cac thuat, bac ha, bac thay
hanh tri » thanh tri, hanh tai, hanh trinh
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
bac tuc » bac tu, bach tuoc
va hanh » van hanh, va thanh, va danh
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: su sach y nang xa hoi. hieu qua ((((bac tuc) OR (bac thua))) or (sach duoc)) va hanh tri cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu qua ((((bac tuc) OR (bac thua))) OR (sach duoc)) va hanh tri cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu qua ((((bac tuc) OR (bac thua))) or (sach duoc)) va hanh tri cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu qua ((((bac tuc) OR (bac thua))) or (sach duoc)) va hanh tri cua triet*.