Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
dung tren » dung trong, dung trung
cua thuoc » nha thuoc, cay thuoc, cua nuoc
sang tay » sang tao, sang tai, sang tac
cham luc » cham soc, nhan luc, cham cuu
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
tay hoi » tay ho, tao hoi, tay thai
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky sang tay hoi. hieu ve cham luc va thanh lap ((dung tren) or (cua thuoc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky sang tay hoi. hieu ve cham luc va thanh lap ((dung tren) OR (cua thuoc)).
• Adding a wildcard symbol may retrieve word variants: su sach ky sang tay hoi. hieu ve cham luc va thanh lap ((dung tren) or (cua thuoc))*.