Perhaps you should try some spelling variations:
sach ky » sac ky, sach y, sach ty
cau cua » cau qua, ca cua, cu cua
va tinh » may tinh
va danh » va dinh, va dan, va hanh
te sach » toc sach
su cham » su pham, vu cham, qua cham
tu cham » toc cham, thi cham
cao hoi » cau hoi, co hoi, cao hoc
cua su » qua su

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

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