Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
sach doi » sach hoi, sach moi, sach dao
lang van » dang van, tang van, hoang van
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
cau duc » cao duc, cau luc, chu duc
sach lo » sach dao, sach hoi, sach moi
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 doi)) lang van hoa. hieu qua ((cau duc) or (cau truc)) va hanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach lo) OR (sach doi)) lang van hoa. hieu qua ((cau duc) OR (cau truc)) va hanh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach lo) OR (sach doi)) lang van hoa. hieu qua ((cau duc) or (cau truc)) va hanh lai cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sach lo) OR (sach doi)) lang van hoa. hieu qua ((cau duc) or (cau truc)) va hanh lai cua te*.