Perhaps you should try some spelling variations:
chung phuong » nhung phuong, thuong phuong, dung phuong
thanh thong » thanh thuong, thanh hong, thanh thang
thong quat » thong quan, thong qua, tong quat
quat chung » luat chung, xuat chung, qua chung
phuong dan » phuong danh, phuong doan, huong dan
hoc thiet » hoc thieu, hoc thuyet, hoc hien
doi chieu » doc hieu, doi chi, ho chieu
dan phan » doan phan, dan chan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thiet) or (doi chieu)) tach - thanh thong quat chung phuong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (doi chieu)) tach - thanh thong quat chung phuong dan phan tu*.