Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
ty nang » ky nang, ty hang, ty nong
ly nang » ky nang, ly hang, ly vang
va cham » va chat, va tham
duc van » duc va, duc tan, duc manh
hanh de » hanh ve, hanh kem
de su » den su, ve su, de tu

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 ((((ty nang) or (ly nang))) or (ty xang)) x ho. lieu va cham duc van hanh de su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((((ty nang) OR (ly nang))) OR (ty xang)) x ho. lieu va cham duc van hanh de su triet.
• Adding a wildcard symbol may retrieve word variants: thu sach ((((ty nang) or (ly nang))) or (ty xang)) x ho. lieu va cham duc van hanh de su triet*.