Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
van hanh » van thanh, ban hanh, van anh
sach ky » sac ky, sach y, sach ty
va tham » van tham, va cham, va thuat
duc van » duc va, duc tan, duc manh
doi cua » dai cua, hoi cua
di cua » dai cua, de cua, do cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang x hoi. lieu ((va tham) or (va thanh)) duc van hanh ((di cua) OR (doi cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang x hoi. lieu ((va tham) OR (va thanh)) duc van hanh ((di cua) OR (doi cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang x hoi. lieu ((va tham) or (va thanh)) duc van hanh ((di cua) OR (doi cua)) triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang x hoi. lieu ((va tham) or (va thanh)) duc van hanh ((di cua) OR (doi cua)) triet*.