Perhaps you should try some spelling variations:
hoach nham » hoang nham, hoach ha, hoac tham
khong phap » chong phap, khong phai, phuong phap
phap thong » phap phong, phap chong, pho thong
dang thuoc » dung thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
cac khong » cac phong, cat khong, cac phuong
sach dang » sach dung, sach danh, sach nang
sach khoa » bach khoa, sach nha, anh khoa
phu thong » pho thong, khau thong, phan thong
nham tuc » nham thuc, nham muc, pham thuc
khoa phu » khoa phau, khoa thu, hoa phu
tuc cac » tu cac, tich cac
tu sach » thu sach, su sach, te sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu hoach nham tuc cac khong phap thong ) or ( tu sach dang thuoc sach khoa phu thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hoach nham tuc cac khong phap thong ) OR ( tu sach dang thuoc sach khoa phu thong )).
• Adding a wildcard symbol may retrieve word variants: (( thu hoach nham tuc cac khong phap thong ) or ( tu sach dang thuoc sach khoa phu thong ))*.