Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh hoai
su triet » su viet, su tien, ve triet
toc giay » toc tay, tac gia, hoc giao
thanh do » thanh de, thanh pho, thanh hoa
cam toc » cac toc, cao toc
hieu ve » hieu va, hieu van
nang xa » lang xa, nang ma, mang xa
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky ((nang xa) or (nang x)) hoi. hieu ve cam toc giay ((thanh doi) OR (thanh do)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((nang xa) OR (nang x)) hoi. hieu ve cam toc giay ((thanh doi) OR (thanh do)) su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((nang xa) or (nang x)) hoi. hieu ve cam toc giay ((thanh doi) OR (thanh do)) su triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang xa) or (nang x)) hoi. hieu ve cam toc giay ((thanh doi) OR (thanh do)) su triet*.