Perhaps you should try some spelling variations:
mlang chai » cang chai, lang hai, lang thai
cao thuoc » cay thuoc, cua thuoc, nam thuoc
thuoc ban » thuoc tan, thuoc dang, thu ban
lang chai » lang ha, lang cua, lang phi
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
ve cao » va cao, ve bao, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. hieu ve cao thuoc ban ((lang chai) or (mlang chai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ve cao thuoc ban ((lang chai) OR (mlang chai)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ve cao thuoc ban ((lang chai) or (mlang chai)) cuu tre*.