Perhaps you should try some spelling variations:
danh doi » danh di, thanh doi, dung doi
doi cua » dai cua, hoi cua
va danh » va dinh, va dan, va hanh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
nang xa » lang xa, nang ma, mang xa
sach v » sach va, sach y, sach vay
soc va » hoc va, loc va, doc va
sach 2 » sach y

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) or (sach 2)) ((nang xa) OR (nang x)) hoi. hieu va cham soc va danh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach 2)) ((nang xa) OR (nang x)) hoi. hieu va cham soc va danh doi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) or (sach 2)) ((nang xa) OR (nang x)) hoi. hieu va cham soc va danh doi cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach 2)) ((nang xa) OR (nang x)) hoi. hieu va cham soc va danh doi cua tre*.