Perhaps you should try some spelling variations:
thuat bain » thuat bao, thuat san, thuat bang
danh thanh » dinh thanh, dang thanh, nhanh thanh
thuat ban » thuat bao, thuat san, thuat toan
sach nhan » sach nha, sach han, sach ngan
thuat bai » thuat bao, thuyet bai, thuat xay
thanh ky » hanh ky, than ky, thanh tay
so danh » do danh, so sanh, so dan
ban hoc » bang hoc, van hoc, bai hoc
so sach » so sanh, bo sach, co sach
nhan ky » nhan y, nhat ky, than ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so danh thanh ky thuat ban hoc ) or ( so sach nhan ky ((thuat bain) or (thuat bai)) hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so danh thanh ky thuat ban hoc ) OR ( so sach nhan ky ((thuat bain) OR (thuat bai)) hoc )).
• Adding a wildcard symbol may retrieve word variants: (( so danh thanh ky thuat ban hoc ) or ( so sach nhan ky ((thuat bain) or (thuat bai)) hoc ))*.