Perhaps you should try some spelling variations:
thuoc sac » thuoc sach, thuoc dac, thuoc sai
thanh bac » nhanh bac, thanh bai, thanh san
dang thai » dang thi, dang hai, dang khai
hanh bac » nhanh bac, hanh cac, danh bac
thai cua » than cua, tai cuc, tri cua
va dang » van dang, va nang, va lang
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 ((hanh bac) or (thanh bac)) nuoc va 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 ((hanh bac) OR (thanh bac)) nuoc va dang thai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sac ky nang ((x hoi) OR (x ho)). thi ((hanh bac) or (thanh bac)) nuoc va dang thai cua tre*".