Perhaps you should try some spelling variations:
thanh ha » thanh hoa, thanh hai, nhanh ha
thanh va » thanh van, hanh va, thanh ve
dao thuc » dan thuc, dao tuc, do thuc
vu kham » vu khanh
cua tre » cua te, cuu tre, cua triet
nang co » nang cao, nang doc, nang noi
tu sach » thu sach, su sach, te sach
co hoi » co hoc, co loi
va dao » ca dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu kham) or (tu sach)) ky nang co hoi. lieu va dao thuc hanh ((thanh va) or (thanh ha)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu kham) OR (tu sach)) ky nang co hoi. lieu va dao thuc hanh ((thanh va) OR (thanh ha)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu kham) or (tu sach)) ky nang co hoi. lieu va dao thuc hanh ((thanh va) or (thanh ha)) cua tre*.