Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
cua duc » cua tuc, cua nuoc, cua quoc
nang xa » nang x, lang xa, nang ma
hanh di » hanh vi, hanh de, hang di
hieu ve » hieu va, hieu van
loc van » luoc van, hoc van, loc va
lo van » le van, vo van, so van
di cua » dai cua, doi cua, de cua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
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: te sac ky ((nang xa) or (lang van)) hoi. hieu ve cac ((loc van) or (lo van)) hanh di cua duc~.
• 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) OR (lo van)) hanh di cua duc.
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang xa) or (lang van)) hoi. hieu ve cac ((loc van) or (lo van)) hanh di cua duc*.