Perhaps you should try some spelling variations:
dang xay » dang van, van xay
van hanh » van thanh, ban hanh, van anh
duc van » duc va, duc tan, duc manh
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
tai cua » thai cua, tri cua, dai cua
va cham » va chat, va tham
te sac » te sach, te cac, te san
va cai » va cac, va bai, va dai
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 dang xay hoi. hieu ((va cai) or (va cham)) duc van hanh ((tai cua) OR (tai cuc)) su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky dang xay hoi. hieu ((va cai) OR (va cham)) duc van hanh ((tai cua) OR (tai cuc)) su*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky dang xay hoi. hieu ((va cai) or (va cham)) duc van hanh ((tai cua) OR (tai cuc)) su*".