Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
toc sach » hoc sach, doc sach, thuoc sach
su triet » su viet, su tien, ve triet
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » vien cac
dau va » dau ve, lau va
van su » dan su
du va » tu va, su va, vu va

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: toc sach y nang ma hoi. hieu ((ve cac) OR (va cac)) ((du va) OR (dau va)) thanh van su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang ma hoi. hieu ((ve cac) OR (va cac)) ((du va) or (dau va)) thanh van su triet~".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang ma hoi. hieu ((ve cac) OR (va cac)) ((du va) or (dau va)) thanh van su triet*.