Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
phan cua » nhan cua, than cua, phat cua
ky lang » ky tang, tay lang
ky dang » ky danh
nam tuc » nam thuc, nam truc, nam tu
tuc va » thuc va, truc va, tuc xa
cua te » cua tu

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 ((((ky lang) OR (ky nang))) or (ky dang)) xa hoi. hieu van nam tuc va thanh phan cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((((ky lang) OR (ky nang))) OR (ky dang)) xa hoi. hieu van nam tuc va thanh phan cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((((ky lang) OR (ky nang))) or (ky dang)) xa hoi. hieu van nam tuc va thanh phan cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ((((ky lang) OR (ky nang))) or (ky dang)) xa hoi. hieu van nam tuc va thanh phan cua te*.