Perhaps you should try some spelling variations:
manh cua » doanh cua, ban cua
lang van » dang van, tang van, hoang van
minh lai » minh hai, minh ai, minh lam
va triet » va thiet, va trien, cua triet
ve triet » va trien, su triet
co sach » bo sach, cuon sach, hoc sach
truc va » thuc va, thuc vat, trung va
va minh » van minh, vua minh, va kinh
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach y ((manh cua) or (lang van)) hoi. lieu va cau truc va minh lai ((va triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach y ((manh cua) OR (lang van)) hoi. lieu va cau truc va minh lai ((va triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach y ((manh cua) or (lang van)) hoi. lieu va cau truc va minh lai ((va triet) OR (ve triet))".
• Adding a wildcard symbol may retrieve word variants: co sach y ((manh cua) or (lang van)) hoi. lieu va cau truc va minh lai ((va triet) OR (ve triet))*.