Perhaps you should try some spelling variations:
phan xuong » phan cong
phau thong » phap thong, khau thong, phan thong
hieu cach » hieu cac, chieu sach, hieu ca
sach tren » sach tien, sach tranh
tren thuc » trien thuc, tron thuc, trinh thuc
hanh khoa » hang khoa, anh khoa, hanh hoa
khoa phau » hoa phan, khoa kham, khoa than
sach tai » sach bai, sach tham, sach dao
tai hieu » tai lieu, thi hieu, tai tieu
tu sach » thu sach, su sach, tu cach
cach co » cach con, cac co, cach noi
te sach » toc 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 sach tai hieu cach co phan xuong ) or ( te sach tren thuc hanh khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tai hieu cach co phan xuong ) OR ( te sach tren thuc hanh khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tai hieu cach co phan xuong ) or ( te sach tren thuc hanh khoa phau thong ))*.