Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
ve cham » va cham, ve chat, vu cham
xuc van » duc van, luc van, xuc ban
ve cam » ve cac, va cam, ve cai
vi cua » vai cua
di cua » dai cua, doi cua, de 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 (ve cham)) xuc van hanh ((vi cua) OR (di 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 (ve cham)) xuc van hanh ((vi cua) OR (di cua)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thieu nang x hoi. hieu ((ve cam) or (ve cham)) xuc van hanh ((vi cua) OR (di cua)) triet*".