Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
cao hoi » co hoi, cao hoc, tao hoi
va cham » va tham
va chat » van chat, va phat, cao chat
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hanh ve » hanh vi, hanh va, hanh kem
y nang » ky nang, ly nang, v nang
ve cua » le cua, de cua, te cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang ((cao hoi) OR (cau hoi)). lieu ((va cham) or (va chat)) thuc va hanh ve cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang ((cao hoi) OR (cau hoi)). lieu ((va cham) OR (va chat)) thuc va hanh ve cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang ((cao hoi) OR (cau hoi)). lieu ((va cham) or (va chat)) thuc va hanh ve cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach y nang ((cao hoi) OR (cau hoi)). lieu ((va cham) or (va chat)) thuc va hanh ve cua te*.