Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
cam loc » cam lo
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
y nang » ly nang, v nang, may nang
va cam » va cham, va cac, va cao
loc va » hoc va, luc va
va cua » va chua, via cua, ca cua

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