Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, lam thuoc
danh vai » danh sai, danh va, doanh van
va triet » va thiet, va trien, ve triet
te sach » toc sach
ky lang » ky tang, tay lang
ky dang » ky danh
van lam » van nam
duoc ma » duoc lam
ma danh » va danh, ma dan, mo danh
vai va » mai va, dai va, hai va

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))) or (ky dang)) xa hoi. hieu van lam duoc ma danh vai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((((ky lang) OR (ky nang))) OR (ky dang)) xa hoi. hieu van lam duoc ma danh vai va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((((ky lang) OR (ky nang))) or (ky dang)) xa hoi. hieu van lam duoc ma danh vai va triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((((ky lang) OR (ky nang))) or (ky dang)) xa hoi. hieu van lam duoc ma danh vai va triet*.