Perhaps you should try some spelling variations:
bach tuoc » sach duoc, sach nuoc
thuoc sac » thuoc sach, thuoc dac, thuoc sai
dang thai » dang thi, dang hai, dang khai
thi nang » thi cong, ki nang, thi hanh
bac nuoc » cac nuoc, sach nuoc, hoc nuoc
san dang » van dang, san sang, ban dang
thai cua » than cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sac ky nang ((x hoi) or (x ho)). thi nang ((bac nuoc) or (bach tuoc)) san dang thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sac ky nang ((x hoi) OR (x ho)). thi nang ((bac nuoc) OR (bach tuoc)) san dang thai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sac ky nang ((x hoi) or (x ho)). thi nang ((bac nuoc) or (bach tuoc)) san dang thai cua tre*.