Perhaps you should try some spelling variations:
sach kem » hanh kem
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cao tuc » dao tuc, cao duc, cao suc
va nhan » van nhan, ca nhan, va phan
ve cao » va cao, ve bao, ve cac
tuc va » thuc va, truc va, tuc xa
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach kem) or (sach y)) nang xa hoi. hieu ve cao tuc va nhan vien ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach kem) OR (sach y)) nang xa hoi. hieu ve cao tuc va nhan vien ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach kem) or (sach y)) nang xa hoi. hieu ve cao tuc va nhan vien ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: thu ((sach kem) or (sach y)) nang xa hoi. hieu ve cao tuc va nhan vien ((cua te) OR (cua tu))*.