Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
hieu ve » hieu va, hieu van
toc gia » toc giay, tac gia, quoc gia
xay hoi » tay hoi, cay phoi, gay thoi
cam toc » cac toc, cao toc
sach ky » sac ky, sach ty, sach kem
vi cua » vai cua, di cua
cua te » cua tu
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ky) or (sach y)) danh ((xay hoi) OR (xa hoi)). hieu ve cam toc gia thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ky) OR (sach y)) danh ((xay hoi) OR (xa hoi)). hieu ve cam toc gia thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ky) or (sach y)) danh ((xay hoi) OR (xa hoi)). hieu ve cam toc gia thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ky) or (sach y)) danh ((xay hoi) OR (xa hoi)). hieu ve cam toc gia thanh vi cua te*.