Perhaps you should try some spelling variations:
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
thac toc » cac toc, thac cac, thi toc
thai tuc » thai thuc, thai thuy, thai hoc
ban hanh » ban hang
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hai cua » thai cua, dai cua, hoi cua
vai cua » dai cua, lai cua, bai cua
su sac » su sach, su cac, su xac
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: su sac ky dang xay hoi. hieu van ((thac toc) or (thai tuc)) ban hanh ((vai cua) OR (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky dang xay hoi. hieu van ((thac toc) OR (thai tuc)) ban hanh ((vai cua) OR (hai cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky dang xay hoi. hieu van ((thac toc) or (thai tuc)) ban hanh ((vai cua) OR (hai cua)) tre*".