Perhaps you should try some spelling variations:
khoan phan » khoan phai, khoan thanh, hoa phan
nha thuoc » nha nuoc, nhan thuc, nha hoc
sach thai » sach tham, sac thai, sach tai
thuoc cac » thuoc cuc, thuoc cao, thuoc dac
phan tong » phan trong, phan cong, han tong
thai tuc » thai thuc, thai thuy, thai hoc
tuc bach » truc bach, trac bach, tuc cac
ban tong » ban trong, ban tuong, ban thong
tu sach » thu sach, su sach, tu cach
bach ha » bac ha, bich ha, sach ha
te sach » toc sach
ha ban » pha ban, hap ban, va ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach thai tuc bach ha ban tong ) or ( te sach nha thuoc cac khoan phan tong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach thai tuc bach ha ban tong ) OR ( te sach nha thuoc cac khoan phan tong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach thai tuc bach ha ban tong ) or ( te sach nha thuoc cac khoan phan tong ))*.