Perhaps you should try some spelling variations:
khan thong » khap thong, khau thong, nhan thong
hoach thai » hoach thay, hoa thai, hoach toan
thuc cach » thuoc sach, truoc cach, thuc hanh
thai thuc » thai thuy, thai tuc, tham thuc
thuc sach » thuoc sach, thu sach, thuat sach
phu thong » pho thong, phap thong, khau thong
bai thuc » bai thuoc, bao thuc, dai thuc
cach kho » bach khoa, cach thoi, cach pha
kho khan » khoa kham, khoa than
sach dao » lanh dao
dao phu » dat phu, dao phat, dao khau

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu cac bai thuc cach kho khan thong ) or ( thu hoach thai thuc sach dao phu thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cac bai thuc cach kho khan thong ) OR ( thu hoach thai thuc sach dao phu thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu cac bai thuc cach kho khan thong ) or ( thu hoach thai thuc sach dao phu thong ))*.