Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh dan » thanh dan, hanh san, canh dan
hieu cao » chieu cao, hieu cac, hieu ca
lang van » dang van, tang van, hoang van
soc van » hoc van, oc van, soc dan
sac van » cac van, san van, sat van
lang xa » lang ha, dang xay
ban ky » van ky, dan ky
dan su » dang su
tu ban » thu ban, te ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban ky ((lang xa) OR (lang van)) hoi. hieu cao chat ((soc van) or (sac van)) hanh dan su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ky ((lang xa) OR (lang van)) hoi. hieu cao chat ((soc van) OR (sac van)) hanh dan su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ban ky ((lang xa) OR (lang van)) hoi. hieu cao chat ((soc van) or (sac van)) hanh dan su triet".
• Adding a wildcard symbol may retrieve word variants: tu ban ky ((lang xa) OR (lang van)) hoi. hieu cao chat ((soc van) or (sac van)) hanh dan su triet*.