Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cham cuu » cap cuu, chat cua
van hanh » van thanh, ban hanh, van ban
cua viet » ca viet, hoa viet, cua vat
su triet » su viet, su tien, ve triet
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
van anh » van thanh, tuan anh, van minh

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 x ho. lieu va cham cuu ((van hanh) or (van anh)) vi ((cua viet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang x ho. lieu va cham cuu ((van hanh) OR (van anh)) vi ((cua viet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang x ho. lieu va cham cuu ((van hanh) or (van anh)) vi ((cua viet) or (su triet))*.