Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
van hanh » van thanh, ban hanh, van anh
dang xay » dang van, van xay
cham tuc » nham thuc, pham thuc, cham soc
te sach » toc sach
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
cua te » cua tu
cua cu » cua chu, cua cau, cua su
y dang » ky dang, 2 dang, _ dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y dang xay hoi. hieu ve ((cham tuc) OR (tham thuc)) van hanh vi ((cua te) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y dang xay hoi. hieu ve ((cham tuc) OR (tham thuc)) van hanh vi ((cua te) OR (cua cu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y dang xay hoi. hieu ve ((cham tuc) OR (tham thuc)) van hanh vi ((cua te) or (cua cu))".
• Adding a wildcard symbol may retrieve word variants: te sach y dang xay hoi. hieu ve ((cham tuc) OR (tham thuc)) van hanh vi ((cua te) or (cua cu))*.