Perhaps you should try some spelling variations:
tay lang » tai lang, tay tang, tay quang
hieu van » hieu va, thien van, lieu va
danh sai » dung sai, danh bat, danh dau
so sach » so sanh, bo sach, co sach
hieu ve » hieu va
va danh » va dinh, va dan, va hanh
sai hoa » dai hoa, lai hoa, cai hoa
y lang » o lang, _ lang, yen lang
nam tu » nam thu, nam thuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((y lang) OR (tay lang)) xa hoi. ((hieu ve) or (hieu van)) nam tu va danh sai hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((y lang) OR (tay lang)) xa hoi. ((hieu ve) OR (hieu van)) nam tu va danh sai hoa viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((y lang) OR (tay lang)) xa hoi. ((hieu ve) or (hieu van)) nam tu va danh sai hoa viet".
• Adding a wildcard symbol may retrieve word variants: so sach ((y lang) OR (tay lang)) xa hoi. ((hieu ve) or (hieu van)) nam tu va danh sai hoa viet*.