Perhaps you should try some spelling variations:
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve luat » va luat, ve thuat
su hien » su kien, su tien, thu hien
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, duc va
dao ve » bao ve, dap ve, dau ve
ve su » va su

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 y nang xa hoi. hieu ve luat ((tuc va) or (tuc xa)) dao ve su hien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu ve luat ((tuc va) OR (tuc xa)) dao ve su hien.
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu ve luat ((tuc va) or (tuc xa)) dao ve su hien*.