Perhaps you should try some spelling variations:
kham thong » khap thong, khau thong, pham thuong
thuat xanh » thuat lanh, thuat canh, thuat nganh
thuoc sach » hoc sach, nuoc sach, thuat sach
phau thong » phap thong, khau thong, phan thong
xanh khoa » anh khoa, doanh khoa, nganh khoa
khoa kham » kho khan, khoa than
tru thuoc » truc thuoc, tri thuoc, tu thuoc
sach khoa » bach khoa, sach nha, anh khoa
khoa phau » hoa phan, khoa than, khoa thu
ki thuat » ky thuat
doc sach » hoc sach, toc sach, nuoc sach
sach tru » sach truc, sach thu, sach tu
tu cach » tu cac
cach ki » cach kinh, cach noi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu cach ki thuat xanh khoa kham thong ) or ( doc sach tru thuoc sach khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cach ki thuat xanh khoa kham thong ) OR ( doc sach tru thuoc sach khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu cach ki thuat xanh khoa kham thong ) or ( doc sach tru thuoc sach khoa phau thong ))*.