Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
va triet » va thiet, ve triet, cua triet
va trien » va truyen, va thiet, va tuyen
doc sach » hoc sach, toc sach, nuoc sach
cam luc » cam xuc, cau luc
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
v nang » va nang, vu nang, van nang
nang o » nang co, nang ho, nang ro
luc va » duc va, tuc va, loc va
va cam » va cham, va cac, va cao
o hoc » co hoc, mo hoc, so hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc nhanh) or (doc sach)) v nang o hoc. lieu va cam luc va danh di ((va triet) OR (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc nhanh) OR (doc sach)) v nang o hoc. lieu va cam luc va danh di ((va triet) OR (va trien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc nhanh) or (doc sach)) v nang o hoc. lieu va cam luc va danh di ((va triet) OR (va trien))".
• Adding a wildcard symbol may retrieve word variants: ((hoc nhanh) or (doc sach)) v nang o hoc. lieu va cam luc va danh di ((va triet) OR (va trien))*.