Perhaps you should try some spelling variations:
sach hoi » sach doi, sach moi, cach thoi
lang van » dang van, tang van, hoang van
hanh vai » hanh vi, hanh va, hanh tai
sach lo » sach dao, sach doi, sach moi
van hoi » van hoa, van hoc, van hoe
hieu va » lieu va, hieu qua
cac luc » cau luc, coc luc, cac nuoc
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
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 hoi)) lang van hoi. hieu va cac luc va hanh vai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach lo) OR (sach hoi)) lang van hoi. hieu va cac luc va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sach lo) OR (sach hoi)) lang van hoi. hieu va cac luc va hanh vai cua te*.