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

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 van hanh vi ((cua te) or (cua su))~.
• 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 van hanh vi ((cua te) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang xa) or (lang van)) hoi. hieu ve cac loc van hanh vi ((cua te) or (cua su))*.