Perhaps you should try some spelling variations:
danh dau » lanh dao, hang dau, danh tu
su triet » su viet, su tien, ve triet
te sach » toc sach
may hoi » may thoi, tay hoi, mai hoi
ve nang » va nang, ke nang, me nang
de nang » den nang, da nang, ke nang
va danh » va dinh, va dan, va hanh
y mang » cay mang
luc va » duc va, tuc va, loc va
dau su » dau tu, dan su, da su

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 y mang may hoi. hieu ((ve nang) or (de nang)) luc va danh dau su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y mang may hoi. hieu ((ve nang) OR (de nang)) luc va danh dau su triet.
• Adding a wildcard symbol may retrieve word variants: te sach y mang may hoi. hieu ((ve nang) or (de nang)) luc va danh dau su triet*.