Perhaps you should try some spelling variations:
sach dao » lanh dao
lieu van » hieu van, sieu van, lieu nano
sach lo » sach doi, sach hoi, sach moi
nang xa » nang x, lang xa, nang ma
cau duc » cao duc, cau luc, chu duc
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach lo) OR (sach dao)) nang xa hoi. ((lieu van) or (lieu va)) cau duc va danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach lo) OR (sach dao)) nang xa hoi. ((lieu van) OR (lieu va)) cau duc va danh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach lo) OR (sach dao)) nang xa hoi. ((lieu van) or (lieu va)) cau duc va danh vi cua tre*".