Perhaps you should try some spelling variations:
thanh lap » thanh san, thanh hai, thanh van
toc sach » hoc sach, doc sach, thuoc sach
van tham » van thanh, van tuan, van chat
phan lap » phan dau
tham tuc » tham thuc, thai tuc, nham thuc
hieu van » hieu va, thien van, lieu va
sach ty » sach y, sach tu, sach thu
nang co » nang cao, nang doc, nang noi
ty nang » ky nang, ty xang, ty hang
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa
co hoi » co hoc, co loi

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 ty nang co hoi. hieu van tham tuc va ((thanh lap) or (phan lap)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang co hoi. hieu van tham tuc va ((thanh lap) OR (phan lap)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang co hoi. hieu van tham tuc va ((thanh lap) or (phan lap)) cuu tre*.