Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
danh vai » danh sai, danh va, doanh van
lo lang » o lang, so lang, hoa lang
vai cua » dai cua, hai cua, lai cua
le lang » le tang, le dang, le xang
va cham » va chat
va danh » va dinh, va dan, va hanh
va tham » van tham, va thanh, va thuat
luc va » duc va, tuc va, loc va
cua tu » cua tuc, cua su, cua cu

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 ((lo lang) or (le lang)) xa hoi. lieu ((va cham) OR (va tham)) luc va danh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((lo lang) OR (le lang)) xa hoi. lieu ((va cham) OR (va tham)) luc va danh vai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((lo lang) or (le lang)) xa hoi. lieu ((va cham) OR (va tham)) luc va danh vai cua tu".
• Adding a wildcard symbol may retrieve word variants: thu sach ((lo lang) or (le lang)) xa hoi. lieu ((va cham) OR (va tham)) luc va danh vai cua tu*.