Perhaps you should try some spelling variations:
thuoc dang » thuoc dung, thuoc khang, thuc dan
dang thanh » dong thanh, dang hanh, hoang thanh
thanh doi » thanh loi, thanh moi, thanh do
toc sach » hoc sach, doc sach, thuoc sach
toc sac » toc san, hoc sach, doc sach
nang xa » nang x, lang xa, nang ma
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
va nam » ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sac) or (toc sach)) ky nang xa hoi. hieu ((va nam) OR (van nam)) thuoc dang thanh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sac) OR (toc sach)) ky nang xa hoi. hieu ((va nam) OR (van nam)) thuoc dang thanh doi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sac) or (toc sach)) ky nang xa hoi. hieu ((va nam) OR (van nam)) thuoc dang thanh doi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((toc sac) or (toc sach)) ky nang xa hoi. hieu ((va nam) OR (van nam)) thuoc dang thanh doi cua tre*.