Perhaps you should try some spelling variations:
phan thuong » hang thuong, phan xuong
khoan phan » khoan phai, khoan thanh, hoa phan
chieu xanh » chieu sach, chieu sang, chieu tinh
phau thong » phap thong, khau thong, phan thong
cach thuc » anh thuc, cac thu
tai chieu » tam chieu, thi chieu, hai chieu
xanh khoa » anh khoa, doanh khoa, nganh khoa
khoa phau » hoa phan, khoa kham, khoa than
sach tai » sach bai, sach tham, sach dao
tu cach » tu cac
thuc va » thuc vat, thuc dan, thuc day
so sach » so sanh, bo sach, co sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu cach thuc va cac khoan phan thuong ) or ( so sach tai chieu xanh khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cach thuc va cac khoan phan thuong ) OR ( so sach tai chieu xanh khoa phau thong ))*.