Perhaps you should try some spelling variations:
cham loc » cham soc, chon loc, cham o
su sach » so sach, vu sach
va cham » va chat, va tham
va danh » va dinh, va dan, va hanh
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, me hoi
loc va » hoc va, luc va
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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 y nang ((ma hoi) OR (ma hoa)). lieu va cham loc va danh ((vi cua) or (di cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ((ma hoi) OR (ma hoa)). lieu va cham loc va danh ((vi cua) OR (di cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ((ma hoi) OR (ma hoa)). lieu va cham loc va danh ((vi cua) or (di cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((ma hoi) OR (ma hoa)). lieu va cham loc va danh ((vi cua) or (di cua)) triet*.