Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
van thanh » ban thanh, van tuan
su sach » so sach, vu sach
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
ve pham » v pham, ve phan, ve phat
duc van » duc va, duc tan, duc manh
hai duc » hoai duc, mai duc, ha duc
duc tre » duoc tren, duc tien

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ky nang ma hoa. hieu ((ve pham) OR (vi pham)) duc van thanh hai duc tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (te sach)) ky nang ma hoa. hieu ((ve pham) OR (vi pham)) duc van thanh hai duc tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) ky nang ma hoa. hieu ((ve pham) OR (vi pham)) duc van thanh hai duc tre*.