Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
pham cuc » pham chuc, pham duc, pham cua
ban danh » ban doanh, ban hanh, ban dan
sach ky » sac ky, sach y, sach ty
cao hoi » co hoi, cao hoc, tao hoi
cam cuc » cam xuc, cham cuu
danh va » doanh va, hanh va, anh va
su viet » so viet

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang ((cao hoi) OR (cau hoi)). lieu va ((cam cuc) or (pham cuc)) ban danh va su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang ((cao hoi) OR (cau hoi)). lieu va ((cam cuc) OR (pham cuc)) ban danh va su viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang ((cao hoi) OR (cau hoi)). lieu va ((cam cuc) or (pham cuc)) ban danh va su viet".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang ((cao hoi) OR (cau hoi)). lieu va ((cam cuc) or (pham cuc)) ban danh va su viet*.