Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
tran mach » tran manh, trinh mach, trong mach
mach khoa » bach khoa, anh khoa, may khoa
phu thong » pho thong, phap thong, khau thong
nuoc sach » nguoi sach, hoc sach, cuoc cach
sach khoa » bach khoa, sach nha, anh khoa
khoa phau » hoa phan, khoa kham, khoa than
sach dao » lanh dao
dao tran » dao trang, bao tran, dao thanh
khoa phu » khoa thu, hoa phu, khoe phu
sach tac » sach bac, sach tai, sach tham
tac nuoc » cac nuoc, tac cuoc, tac nguoi
tu sach » thu sach, su sach, te 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 dao tran mach khoa phu thong ) or ( tu sach tac nuoc sach khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach dao tran mach khoa phu thong ) OR ( tu sach tac nuoc sach khoa phau thong ))*.