Perhaps you should try some spelling variations:
thanh do » thanh de, thanh pho, thanh hoa
thanh di » thanh doi, thanh de, thanh dinh
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
hieu ve » hieu va, hieu van
su xac » pu xac, su cac
cua te » cua tu
loc va » hoc va
xac ky » cac ky, sac ky, bac ky
luc va » duc va, tuc va
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su xac ky lang ha noi. hieu ve cac ((luc va) or (loc va)) ((thanh di) OR (thanh do)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky lang ha noi. hieu ve cac ((luc va) OR (loc va)) ((thanh di) OR (thanh do)) cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su xac ky lang ha noi. hieu ve cac ((luc va) or (loc va)) ((thanh di) OR (thanh do)) cua te*".