Perhaps you should try some spelling variations:
danh kien » dinh kien, danh viet, linh kien
danh dien » dinh dien, danh lien, nganh dien
tham soc » cham soc, tham nuoc, thai son
te sach » toc sach
va tham » van tham, va cham, va thanh
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach v ((nang xa) or (nang x)) hoi. hieu va tham soc va ((danh dien) OR (danh kien)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v ((nang xa) OR (nang x)) hoi. hieu va tham soc va ((danh dien) OR (danh kien)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v ((nang xa) or (nang x)) hoi. hieu va tham soc va ((danh dien) OR (danh kien)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach v ((nang xa) or (nang x)) hoi. hieu va tham soc va ((danh dien) OR (danh kien)) cua tre*.