Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
phu thong » pho thong, phap thong, khau thong
xanh khoa » anh khoa, doanh khoa, nganh khoa
thuc cach » thuoc sach, truoc cach, thuc hanh
cach khoa » bach khoa, cac khoa, cac khoan
khoa phau » hoa phan, khoa kham, khoa than
sach tri » sach tai, sach tren, sach truc
khoa phu » khoa thu, hoa phu, khoe phu
thu sach » thuat sach, thuoc sach, thu hoach
sach dao » lanh dao
dao thuc » dan thuc, dao tuc, do thuc
tu sach » su sach, te sach, tu cach
ve xanh » ve canh, ve hanh, ve thanh
tri ve » tri va, tri le, trinh ve

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 tri ve xanh khoa phu thong ) or ( thu sach dao thuc cach khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tri ve xanh khoa phu thong ) OR ( thu sach dao thuc cach khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tri ve xanh khoa phu thong ) or ( thu sach dao thuc cach khoa phau thong ))*.