Perhaps you should try some spelling variations:
biet nghia » biet nghi, viet nghin
nghia cua » nghiep cua, nghia xa, nghia duy
sach phat » sach nha, cach pha, sach dat
sach tham » sach nha
nuoc biet » nuoc viet, nguoi biet, quoc viet
bi doi » bi di, bi hoi, bien doi
bo doi » bo di, bo noi, co doi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach phat) OR (sach tham)) nuoc biet nghia cua ets : nhung ((bi doi) or (bo doi)) vi đai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach phat) OR (sach tham)) nuoc biet nghia cua ets : nhung ((bi doi) OR (bo doi)) vi đai*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach phat) OR (sach tham)) nuoc biet nghia cua ets : nhung ((bi doi) or (bo doi)) vi đai*".