Perhaps you should try some spelling variations:
phan thuong » hang thuong, phan xuong
sanh trong » sinh trong, anh trong, hanh trong
phap thong » phap phong, phap chong, pho thong
trong thu » trong nha
hanh khoa » hang khoa, anh khoa, hanh hoa
thu hanh » thuc hanh, thu thanh, thuy hanh
su sanh » so sanh, su sach, su anh

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sanh trong thu hanh khoa ((phan thuong) or (phap thong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sanh trong thu hanh khoa ((phan thuong) OR (phap thong)).
• Adding a wildcard symbol may retrieve word variants: su sanh trong thu hanh khoa ((phan thuong) or (phap thong))*.