Perhaps you should try some spelling variations:
van chat » cao chat
chat tuc » chat xuc, luat tuc, chat huu
thu sach » thuat sach, thuoc sach, thu hoach
va triet » va trien, ve triet, cua triet
hieu van » hieu va, thien van, lieu va
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
tu sach » su sach, te sach, tu cach
tuc va » thuc va, truc va, tuc xa
v nang » va nang, vu nang, van nang
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) v nang x ho. hieu van chat tuc va hanh di ((va triet) OR (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) v nang x ho. hieu van chat tuc va hanh di ((va triet) OR (va thiet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) v nang x ho. hieu van chat tuc va hanh di ((va triet) OR (va thiet))*".