Perhaps you should try some spelling variations:
truc gia » truc giac, tuc gia, thuc giai
so sach » so sanh, bo sach, co sach
cao hoi » cau hoi, co hoi, cao hoc
ve cham » va cham, vu cham, ve chim
ve chat » va chat, van chat
y nang » ky nang, ly nang, v nang
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: so sach y nang cao hoi. hieu ((ve cham) OR (ve chat)) truc gia thanh ((vi cua) or (di cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang cao hoi. hieu ((ve cham) OR (ve chat)) truc gia thanh ((vi cua) OR (di cua)) viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang cao hoi. hieu ((ve cham) OR (ve chat)) truc gia thanh ((vi cua) or (di cua)) viet".
• Adding a wildcard symbol may retrieve word variants: so sach y nang cao hoi. hieu ((ve cham) OR (ve chat)) truc gia thanh ((vi cua) or (di cua)) viet*.