Perhaps you should try some spelling variations:
te sach » toc sach
va danh » va dan, va hanh, dia danh
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
va dinh » van dinh, va kinh, va tinh
sach tu » sach thu, cach tu, sach ty
va cua » va chua, via cua, ca cua
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai
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: te sach tu nang xa hoi. hieu ((ve cam) or (ve cac)) duc ((va danh) OR (va dinh)) va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nang xa hoi. hieu ((ve cam) OR (ve cac)) duc ((va danh) OR (va dinh)) va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang xa hoi. hieu ((ve cam) or (ve cac)) duc ((va danh) OR (va dinh)) va cua te".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang xa hoi. hieu ((ve cam) or (ve cac)) duc ((va danh) OR (va dinh)) va cua te*.