Perhaps you should try some spelling variations:
phap thong » phap phong, phap chong, pho thong
phau thong » khau thong, phan thong, phan thuong
xac thai » rac thai, sac thai, xa thai
nha phau » nha phat, nhap khau, khoa phau
sach bai » sach dao, cac bai, sach xa
hoc bach » hoc sach, hoc cach, hoc bac
bach hoa » bach khoa, bach ha, cach hoan
hoa phap » hoa phan, hoc phap, hoa nhap
thai do » thay doi, thai den
do sach » doc sach, do sanh, bo sach
so sach » so sanh, bo sach, co sach
bai hoc » dai hoc
su xac » pu xac, su cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su xac thai do sach nha phau thong ) or ( so sach bai hoc bach hoa phap thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su xac thai do sach nha phau thong ) OR ( so sach bai hoc bach hoa phap thong )).
• Adding a wildcard symbol may retrieve word variants: (( su xac thai do sach nha phau thong ) or ( so sach bai hoc bach hoa phap thong ))*.