Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
nang vi » hang vi, nang ji, nang si
luc va » duc va, tuc va, loc va
va cau » van cau, va cac, va dau
sach v » sach va, sach y, sach 2
ve cau » ke cau, ve cac, le cau
v nang » va nang, vu nang, van nang
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach v nang xa hoi. hieu ((ve cau) OR (va cau)) luc va ((nang vi) or (hang va)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang xa hoi. hieu ((ve cau) OR (va cau)) luc va ((nang vi) OR (hang va)) cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang xa hoi. hieu ((ve cau) OR (va cau)) luc va ((nang vi) or (hang va)) cua tu".
• Adding a wildcard symbol may retrieve word variants: tu sach v nang xa hoi. hieu ((ve cau) OR (va cau)) luc va ((nang vi) or (hang va)) cua tu*.