Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
thanh ve » hanh ve, thanh va, thanh vien
la tren » loai tren, dua tren, dat tren
lang xa » lang ha, dang xay, lang van
xuc ban » duc ban, cuc ban, quoc ban
hieu ve » hieu va
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve la » de la, ve li, ve 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 sac ky ((lang xa) or (nang x)) hoi. ((hieu ve) OR (hieu van)) cam xuc ban thanh ve la tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((lang xa) OR (nang x)) hoi. ((hieu ve) OR (hieu van)) cam xuc ban thanh ve la tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((lang xa) or (nang x)) hoi. ((hieu ve) OR (hieu van)) cam xuc ban thanh ve la tren".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((lang xa) or (nang x)) hoi. ((hieu ve) OR (hieu van)) cam xuc ban thanh ve la tren*.