Perhaps you should try some spelling variations:
sach moi » sach doi, sach hoi, bach mai
lang van » dang van, tang van, hoang van
hang di » hang doi, hang vi, hang dien
hanh di » hanh vi, hanh de, danh di
cau luc » cau truc, cau phuc
sach lo » sach dao, sach doi, sach hoi
qua cau » quan cau, qua cac, qua ca
luc va » duc va, tuc va, loc va
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: tu ((sach lo) or (sach moi)) lang van hoa. hieu qua cau luc va ((hanh di) OR (hang di)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach lo) OR (sach moi)) lang van hoa. hieu qua cau luc va ((hanh di) OR (hang di)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach lo) or (sach moi)) lang van hoa. hieu qua cau luc va ((hanh di) OR (hang di)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sach lo) or (sach moi)) lang van hoa. hieu qua cau luc va ((hanh di) OR (hang di)) cua te*.