Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
dieu hien » dieu khien, dieu kien, bieu hien
van thanh » ban thanh, van tuan
hien cam » hien cac, hien cau, hien giam
su sach » so sach, vu sach
xuc van » duc van, luc van, vuc van
vai cua » dai cua, hai cua, lai cua
vi cua » di cua
x hoi » xa hoi, o hoi, 5 hoi

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) or (x ho)). dieu hien cam xuc van thanh ((vi cua) OR (vai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thieu nang ((x hoi) OR (x ho)). dieu hien cam xuc van thanh ((vi cua) OR (vai cua)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thieu nang ((x hoi) or (x ho)). dieu hien cam xuc van thanh ((vi cua) OR (vai cua)) triet*".