Perhaps you should try some spelling variations:
chau viet » chu viet, khau viet, cham viet
danh lai » danh sai, gianh lai, dinh lam
sach ky » sac ky, sach ty, sach kem
dang xa » dang xay, lang xa, dang ha
hieu vi » hieu voi, hieu ve, hien vi
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh

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) OR (sach y)) dang xa hoi. ((hieu vi) or (hieu va)) pham duc va danh lai chau viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) dang xa hoi. ((hieu vi) OR (hieu va)) pham duc va danh lai chau viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sach y)) dang xa hoi. ((hieu vi) or (hieu va)) pham duc va danh lai chau viet".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) OR (sach y)) dang xa hoi. ((hieu vi) or (hieu va)) pham duc va danh lai chau viet*.