Perhaps you should try some spelling variations:
thong duong » tuong duong, thong dung, thong huong
thuc thanh » thuoc thanh, phuc thanh, thu thanh
hanh huong » thanh huong, anh huong, manh huong
duong toan » dung toan, duong tan, duong tuan
huong cua » dung cua
cua thong » cua thuong, cua khong, cua tong
toan phan » thanh phan, toan ban, hoa phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: choi ((thuc thanh) or (thuc hanh)) - hanh huong cua thong duong toan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: choi ((thuc thanh) OR (thuc hanh)) - hanh huong cua thong duong toan phan tu.
• Adding a wildcard symbol may retrieve word variants: choi ((thuc thanh) or (thuc hanh)) - hanh huong cua thong duong toan phan tu*.