Perhaps you should try some spelling variations:
sach nuoc » sach duoc, cac nuoc, dich nuoc
bach tuoc » sach duoc
cua triet » cua viet, su triet, va triet
hanh tri » thanh tri, hanh tai, hanh trinh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
bac tuc » bac tu, bac thua
va hanh » van hanh, va thanh, va danh

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 ky nang xa hoi. hieu va ((bac tuc) or (((bach tuoc) OR (sach nuoc)))) va hanh tri cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu va ((bac tuc) OR (((bach tuoc) OR (sach nuoc)))) va hanh tri cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu va ((bac tuc) or (((bach tuoc) OR (sach nuoc)))) va hanh tri cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu va ((bac tuc) or (((bach tuoc) OR (sach nuoc)))) va hanh tri cua triet*.