Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, le thanh
su sach » so sach, vu sach
nang co » nang cao, nang doc, nang noi
loi cua » loai cua, hoi cua, doi cua
va tinh » may tinh
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang
ve cam » ve cham, va cam, ve cai
co loi » co hoi
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: su sach y nang co loi. hieu ((ve cam) or (ve cac)) xuc ((va thanh) OR (va tinh)) loi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang co loi. hieu ((ve cam) OR (ve cac)) xuc ((va thanh) OR (va tinh)) loi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang co loi. hieu ((ve cam) or (ve cac)) xuc ((va thanh) OR (va tinh)) loi cua te".
• Adding a wildcard symbol may retrieve word variants: su sach y nang co loi. hieu ((ve cam) or (ve cac)) xuc ((va thanh) OR (va tinh)) loi cua te*.