Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
dieu cua » dieu tra
van hanh » van thanh, ban hanh, van anh
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va, hieu van
cac luc » cau luc, cac nuoc, cac cuoc
de cua » le cua, te cua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky

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