Perhaps you should try some spelling variations:
thanh gian » thanh giang, thach giang, thanh san
ve triet » va trien, su triet
thanh gi » thanh nghi, thanh hai, thanh ngu
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
sang ma » tang ma, nang ma, sang tao
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va

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 ty ((lang xa) or (sang ma)) hoi. hieu ve cam xuc va ((thanh gi) OR (thanh gian)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((lang xa) OR (sang ma)) hoi. hieu ve cam xuc va ((thanh gi) OR (thanh gian)) ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((lang xa) or (sang ma)) hoi. hieu ve cam xuc va ((thanh gi) OR (thanh gian)) ve triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((lang xa) or (sang ma)) hoi. hieu ve cam xuc va ((thanh gi) OR (thanh gian)) ve triet*.