Perhaps you should try some spelling variations:
danh vai » danh sai, doanh van, dang van
thuc day » thuc dan, thuc vat
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
danh va » doanh va, hanh va, anh va
cua tre » cua te, cuu tre, cua triet
thuc va » thuc vat, thuc dan
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
va do » va dao, va doc, va co

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