Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, lai cua, bai cua
hai cua » thai cua, dai cua, hoi cua
cac ly » cac ky, cac le, cam ly

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc sach ((ky lang) OR (ky tang)) xa hoi. lieu va cac ly va hanh ((vai cua) or (hai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach ((ky lang) OR (ky tang)) xa hoi. lieu va cac ly va hanh ((vai cua) OR (hai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach ((ky lang) OR (ky tang)) xa hoi. lieu va cac ly va hanh ((vai cua) or (hai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: nuoc sach ((ky lang) OR (ky tang)) xa hoi. lieu va cac ly va hanh ((vai cua) or (hai cua)) triet*.