Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
thai tuc » thai thuc, thai thuy, thai hoc
dang xay » dang van, van xay
hieu van » hieu va, thien van, hieu ve
su sach » so sach, vu sach
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
lai cua » dai cua, hai cua, lai chau
sach ky » sac ky, sach y, sach ty
hac tuc » thac toc
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky dang xay hoi. ((hieu van) or (lieu va)) ((hac tuc) OR (thai tuc)) gia thanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky dang xay hoi. ((hieu van) OR (lieu va)) ((hac tuc) OR (thai tuc)) gia thanh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky dang xay hoi. ((hieu van) or (lieu va)) ((hac tuc) OR (thai tuc)) gia thanh lai cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ky dang xay hoi. ((hieu van) or (lieu va)) ((hac tuc) OR (thai tuc)) gia thanh lai cua te*.