Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
van hanh » van thanh, ban hanh, van anh
mang cua » manh cua, dung cua, ban cua
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
va cham » va chat, va tham
duc van » duc va, duc tan, duc manh
cau cua » cau qua, ca cua, cu cua
y nang » ly nang, v nang, may nang
ma hoi » mai hoi, xa hoi, ma hoa

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 ((y nang) or (ky nang)) ma hoi. hieu va cham duc van hanh ((cau cua) or (mang cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (ky nang)) ma hoi. hieu va cham duc van hanh ((cau cua) OR (mang cua)) triet.
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) or (ky nang)) ma hoi. hieu va cham duc van hanh ((cau cua) or (mang cua)) triet*.