Perhaps you should try some spelling variations:
sach phuong » bach phuong, sach huong, sach thuong
thuc thuoc » truc thuoc, thu thuoc, hoc thuoc
bach khang » bac thang, bach dang
thuoc sach » hoc sach, nuoc sach, thuat sach
cach thuc » anh thuc, cac thu
thuc thuc » hoc thuc
thuc bach » truc bach, thuc cach, thuc hanh
khang kho » khong kho, khong khoa, hang khoa
kho trong » cho trong, ho trong, nho trong
phuong ke » phuong te, phuong de, phuong yen
ke trong » le trong, ke trang, ben trong
ve cach » va cach, ve cac, ve canh
te cach » te sach, tu cach, te cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ve cach thuc thuc bach khang kho trong ) or ( te cach thuc thuoc sach phuong ke trong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ve cach thuc thuc bach khang kho trong ) OR ( te cach thuc thuoc sach phuong ke trong )).
• Adding a wildcard symbol may retrieve word variants: (( ve cach thuc thuc bach khang kho trong ) or ( te cach thuc thuoc sach phuong ke trong ))*.