Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
dung khoa » dung cho
khoa phau » hoa phan, khoa kham, khoa than
phu thong » pho thong, phap thong, khau thong
sach bai » cac bai, sach xa
tue dung » tuc dung, te dung, tuyen dung
sach dao » lanh dao
dao thuc » dan thuc, dao tuc, do thuc
thuc cac » thuc cach, tuc cac, phuc cac
cac khoa » cac khoan, cac khoi, dac khoa
khoa phu » khoa thu, hoa phu, khoe phu
su sach » so sach, vu sach
bai tue » bai tu
tu sach » thu sach, te sach, tu cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su sach bai tue dung khoa phau thong ) or ( tu sach dao thuc cac khoa phu thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach bai tue dung khoa phau thong ) OR ( tu sach dao thuc cac khoa phu thong ))*.