Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
thinh le » trinh ly
thanh le » thanh ve, thanh de, thanh liem
thuc ban » thuoc ban, thuc dan, thu ban
tu sach » thu sach, su sach, tu cach
ve nham » ve nha, ve cham
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (te sach)) ty lang xa hoi. hieu ve nham thuc ban ((thanh le) or (thinh le)) cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ty lang xa hoi. hieu ve nham thuc ban ((thanh le) OR (thinh le)) cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ty lang xa hoi. hieu ve nham thuc ban ((thanh le) or (thinh le)) cua vat".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ty lang xa hoi. hieu ve nham thuc ban ((thanh le) or (thinh le)) cua vat*.