Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
van cua » vang cua, ban cua, dan cua
cac duc » cac du, cao duc, cac dac
hieu ve » hieu va
vu nang » vuc nang, va nang, vu dang
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
v nang » va nang, van nang, voi nang

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 ((v nang) OR (vu nang)) ma hoi. ((hieu ve) or (hieu van)) cac duc va thanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((v nang) OR (vu nang)) ma hoi. ((hieu ve) OR (hieu van)) cac duc va thanh van cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((v nang) OR (vu nang)) ma hoi. ((hieu ve) or (hieu van)) cac duc va thanh van cua tre*".