Perhaps you should try some spelling variations:
ve triet » va trien, su triet
phan duc » pham duc, phan tu, phan dau
hieu van » hieu va, thien van, lieu va
van phan » van phong, van thanh, luan phan
ty nang » ky nang, ty hang, ly nang
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
su sach » so sach, vu sach
va ve » va de, va le, va vi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ty nang) OR (ty xang)) xa hoi. hieu van phan duc ((va hanh) or (va danh)) va ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty nang) OR (ty xang)) xa hoi. hieu van phan duc ((va hanh) OR (va danh)) va ve triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty nang) OR (ty xang)) xa hoi. hieu van phan duc ((va hanh) or (va danh)) va ve triet*".