Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
ve cham » va cham, ve chat, vu cham
luc van » luoc van, luu van, duc van
ve cam » ve cac, ve cai, ve cau
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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 thieu nang x hoi. hieu ((((ve cam) or (va cam))) or (ve cham)) luc van hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thieu nang x hoi. hieu ((((ve cam) OR (va cam))) OR (ve cham)) luc van hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach thieu nang x hoi. hieu ((((ve cam) or (va cam))) or (ve cham)) luc van hanh vi cua triet*.