Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
thuc thuoc » thuc thuc, truc thuoc, thu thuoc
thuoc bach » thuoc sach, thuoc ban, truc bach
thuat san » thuat toan, thuat song, thuat lanh
cach thuc » anh thuc, cac thu
thu sach » tu sach, thuat sach, thuoc sach
ki thuat » ky thuat
nha phau » nha phat, nhap khau, khoa phau
bach hoa » bach khoa, bach ha, cach hoan
sach ki » sach kinh, sach bai, sach kem
san nha » san nhat, ban nha, can nha
tu cach » tu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu sach ki thuat san nha phau thong ) or ( tu cach thuc thuoc bach hoa he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu sach ki thuat san nha phau thong ) OR ( tu cach thuc thuoc bach hoa he thong )).
• Adding a wildcard symbol may retrieve word variants: (( thu sach ki thuat san nha phau thong ) or ( tu cach thuc thuoc bach hoa he thong ))*.