Perhaps you should try some spelling variations:
huu dang » huu dung, huu bang, huu dong
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
uu dang » su dang, vu dang, xu dang
hai cua » thai cua, dai cua, hoi cua
vai cua » dai cua, lai cua, bai cua
hieu va » lieu va, hieu qua
cau luc » cau truc, cau phuc
luc van » luoc van, luu van, duc van
va cau » van cau, va cac, va dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((uu dang) OR (huu dang)) xa hoi. hieu va cau luc van hanh ((vai cua) or (hai cua)) su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((uu dang) OR (huu dang)) xa hoi. hieu va cau luc van hanh ((vai cua) OR (hai cua)) su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((uu dang) OR (huu dang)) xa hoi. hieu va cau luc van hanh ((vai cua) or (hai cua)) su".
• Adding a wildcard symbol may retrieve word variants: te sach ((uu dang) OR (huu dang)) xa hoi. hieu va cau luc van hanh ((vai cua) or (hai cua)) su*.