Perhaps you should try some spelling variations:
khoan phai » khong phai, khoa phau, khoan hoi
khap thong » phap thong, khau thong, khac thuong
phai thong » phap thong, phai tuong, phan thong
hoach sat » hoach dat, hoach san, hoach sau
hanh khoa » hang khoa, anh khoa, hanh hoa
khoa khap » khoa kham, khoa khac, kho khan
sach tham » sach nha
tham thac » tham tham, tham thuc, tham khao
tu hoach » thu hoach, tu hach, quy hoach
sat thuc » am thuc, va thuc, dan thuc
thac cac » thoai cac, thanh cac, thuc cach
su sach » so sach, vu 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 hoach sat thuc hanh khoa khap thong ) or ( su sach tham thac cac khoan phai thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu hoach sat thuc hanh khoa khap thong ) OR ( su sach tham thac cac khoan phai thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu hoach sat thuc hanh khoa khap thong ) or ( su sach tham thac cac khoan phai thong ))*.