Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
danh sai » dung sai, danh bat, danh dau
ve triet » va trien, su triet
te sach » toc sach
ky lang » ky dang, ky tang, tay lang
van cau » van dau, van hau, van chat
cau xuc » cam xuc, cau luc, cau truc
va danh » va dinh, va dan, va hanh
xuc va » duc va, tuc va, luc va
cua su » qua 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 ((ky lang) OR (ky nang)) xa hoi. hieu van cau xuc va danh sai ((ve triet) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky lang) OR (ky nang)) xa hoi. hieu van cau xuc va danh sai ((ve triet) OR (cua su))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky lang) OR (ky nang)) xa hoi. hieu van cau xuc va danh sai ((ve triet) or (cua su))*".