Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
dang xay » dang van, van xay
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
cua tuc » cua tu, cua thuoc, luat tuc
tuc van » thuc van, truc van, tuc va
ve cham » va cham, ve chat, vu cham
xay hoi » xa hoi, tay hoi, cay phoi
cua duc » cua nuoc, cua quoc
ve cam » ve cac, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach _ dang xay hoi. hieu ((ve cam) or (ve cham)) tuc van hanh vai ((cua tuc) OR (cua duc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach _ dang xay hoi. hieu ((ve cam) OR (ve cham)) tuc van hanh vai ((cua tuc) OR (cua duc))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach _ dang xay hoi. hieu ((ve cam) or (ve cham)) tuc van hanh vai ((cua tuc) OR (cua duc))*".