Perhaps you should try some spelling variations:
cach trinh » hanh trinh, sach tranh, cac tinh
phau thong » phap thong, khau thong, phan thong
sanh tren » sach tren, lanh tren, sinh tren
phan khoa » pham khoa, nhan khoa, phan hoa
khoa phau » hoa phan, khoa kham, khoa than
trinh tai » trinh toan, trinh tu, trinh han
bach khoe » bach khoa, bach hue, bach hoa
pho thong » he thong
tren huu » tran huu, tren thuc, vien huu
huu phan » huu han, cuu phan, uu phan
tai bach » thi bach, trac bach, tai benh
khoe pho » khoe cho, khoe phu, hoc pho
so sanh » do sanh
tu cach » tu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so sanh tren huu phan khoa phau thong ) or ( tu cach trinh tai bach khoe pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sanh tren huu phan khoa phau thong ) OR ( tu cach trinh tai bach khoe pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( so sanh tren huu phan khoa phau thong ) or ( tu cach trinh tai bach khoe pho thong ))*.