Perhaps you should try some spelling variations:
bach tuoc » sach nuoc
sach duoc » sach nuoc, sach dao, sach dung
hanh tri » thanh tri, hanh tai, hanh trinh
su triet » su viet, su tien, ve triet
hieu va » lieu va, hieu qua
bac tuc » bac tu, bac thua
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
tri su » tri du, tai su, trinh su
x hoi » xa hoi, o hoi, x ho

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