Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
van cac » van hac, van cau, van bac
luc ban » duc ban, cuc ban, luc bat
cac luc » cau luc, coc luc, cac nuoc
van hoi » van hoa, van hoc, van hoe
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
ho cua » hoi cua, hoa cua, cho cua
vu sac » vu sach, vu san, va sac

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ((ky lang) or (ky dang)) van hoi. hieu van cac luc ban thanh ((ho cua) OR (hoc cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ((ky lang) OR (ky dang)) van hoi. hieu van cac luc ban thanh ((ho cua) OR (hoc cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ((ky lang) or (ky dang)) van hoi. hieu van cac luc ban thanh ((ho cua) OR (hoc cua)) tre*".