Perhaps you should try some spelling variations:
vat danh » va danh, van danh, luat danh
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
co thuc » do thuc, co thua, mo thuc
danh va » doanh va, hanh va, anh va
va cua » va chua, via cua, ca cua
cua te » cua tu

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) OR (lieu va)) co thuc vat danh va cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang xa hoi. ((hieu va) OR (lieu va)) co thuc vat danh va cua te".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang xa hoi. ((hieu va) OR (lieu va)) co thuc vat danh va cua te*.