Perhaps you should try some spelling variations:
te sach » toc sach
thuc va » thuc vat, thuc dan, thuc day
sach ky » sac ky, sach y, sach ty
su tien » su kien, su hien, tu tieng
ve luat » va luat, ve thuat
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
tuc va » truc va, tuc xa, duc va
dao ve » bao ve, dap ve, dao viet
dau ve » dap ve

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 ky nang xa hoi. hieu ve luat ((tuc va) or (thuc va)) ((dao ve) OR (dau ve)) su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ve luat ((tuc va) OR (thuc va)) ((dao ve) OR (dau ve)) su tien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ve luat ((tuc va) or (thuc va)) ((dao ve) OR (dau ve)) su tien".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ve luat ((tuc va) or (thuc va)) ((dao ve) OR (dau ve)) su tien*.