Perhaps you should try some spelling variations:
tien thuoc » trien thuoc, tin thuoc, bien thuoc
thuoc bach » thuoc sach, thuoc ban, truc bach
bach khuan » bach khoa, bach khang, bach xuan
khoa thong » hoa thong, thoai thong, khoi khong
sach tien » sach tren, sach thieu
pho thong » he thong
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tien thuoc bach khuan ((khoa thong) OR (pho thong))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tien thuoc bach khuan ((khoa thong) OR (pho thong))".
• Adding a wildcard symbol may retrieve word variants: te sach tien thuoc bach khuan ((khoa thong) OR (pho thong))*.