Perhaps you should try some spelling variations:
phap chong » phap phong, phap cong, pham hong
khoan phap » khoan phai, khoa phau, han phap
thu thuoc » tu thuoc, thu thuc, tru thuoc
thuoc cac » thuoc cuc, thuoc cao, thuoc dac
khoan pho » khoan nhoi, khoan phai, khoan hoi
pho thong » he thong
sach thu » sach thue, sach thieu, sach tham
so sach » so sanh, bo sach, co sach
vu sach » vu bach, su sach, vu khach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so sach thu thuoc cac khoan pho thong ) or ( vu sach thu thuoc cac khoan phap chong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sach thu thuoc cac khoan pho thong ) OR ( vu sach thu thuoc cac khoan phap chong )).
• Adding a wildcard symbol may retrieve word variants: (( so sach thu thuoc cac khoan pho thong ) or ( vu sach thu thuoc cac khoan phap chong ))*.