Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
cao hoi » cau hoi, co hoi, cao hoc
va cham » va tham
va chat » van chat, va phat, cao chat
thuc va » thuc vat, thuc dan, thuc day
y nang » ky nang, ly nang, v nang
ve cua » le cua, de cua, ve cum
te cua » tue cua, le 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 cao hoi. lieu ((va cham) or (va chat)) thuc va thanh ((ve cua) OR (te cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang cao hoi. lieu ((va cham) OR (va chat)) thuc va thanh ((ve cua) OR (te cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang cao hoi. lieu ((va cham) or (va chat)) thuc va thanh ((ve cua) OR (te cua)) te".
• Adding a wildcard symbol may retrieve word variants: su sach y nang cao hoi. lieu ((va cham) or (va chat)) thuc va thanh ((ve cua) OR (te cua)) te*.