Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
hieu ve » hieu va, hieu van
cac loc » cac lop, cac toc, cac hoc
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
loc va » hoc va, luc va
te sac » te sach, te cac, te san
ve cac » va cac, vien cac
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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 (lang van)) hoi. hieu ve cac loc va hanh vi ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((nang xa) OR (lang van)) hoi. hieu ve cac loc va hanh vi ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((nang xa) or (lang van)) hoi. hieu ve cac loc va hanh vi ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang xa) or (lang van)) hoi. hieu ve cac loc va hanh vi ((cua te) OR (cua tu))*.