Perhaps you should try some spelling variations:
khau thong » khau thuong, khap thong, khau tong
thuoc sinh » hoc sinh, thu sinh, thuoc sach
phan thong » phan thuong, phan hong, phan tong
tac thuoc » tao thuoc, truc thuoc, tac thuong
sinh khoa » sinh hoc, sinh hoat
khoa khau » khoa kham, khoa phau, khoa chau
khoa phan » hoa phan, khoa than, khoa phau
canh tac » canh tay, canh giac, cong tac
anh khoa » doanh khoa, hang khoa
tu canh » thu canh, tu chanh, tu hanh
hoc anh » hoc nganh, hoc nhanh, ngoc anh
tu can » tu ban, tu cac, thu canh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu canh tac thuoc sinh khoa khau thong ) or ( tu can dai hoc anh khoa phan thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu canh tac thuoc sinh khoa khau thong ) OR ( tu can dai hoc anh khoa phan thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu canh tac thuoc sinh khoa khau thong ) or ( tu can dai hoc anh khoa phan thong ))*.