Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
su triet » su viet, su tien, ve triet
thanh ki » thanh kim, thanh ky, thanh ke
hang cau » hang ca, nhung cau, nang cao
hang dau » hang va, hang tai
sach lo » sach dao, sach doi, sach hoi
xuc van » duc van, luc van, vuc van
te sach » toc sach
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai
ki su » ky su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach lo ((hang cau) OR (hang dau)) hoi. hieu ((ve cam) OR (ve cac)) xuc van thanh ki su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach lo ((hang cau) or (hang dau)) hoi. hieu ((ve cam) OR (ve cac)) xuc van thanh ki su triet~".
• Adding a wildcard symbol may retrieve word variants: te sach lo ((hang cau) or (hang dau)) hoi. hieu ((ve cam) OR (ve cac)) xuc van thanh ki su triet*.