Perhaps you should try some spelling variations:
sach tham » sach nha
su triet » su viet, su tien, ve triet
thuc van » thuc vat, thuc dan, thuc va
va triet » va thiet, va trien, ve triet
van hang » van khang, van hoang, van thang
sach thu » sach thue, sach thieu, cach thuc
cam thuc » am thuc, nam thuc, cam thu
hang vi » hang va, hanh vi, hang di
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach thu) OR (sach tham)) nang x hoi. hieu ve cam thuc van hang vi ((va triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach thu) OR (sach tham)) nang x hoi. hieu ve cam thuc van hang vi ((va triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach thu) OR (sach tham)) nang x hoi. hieu ve cam thuc van hang vi ((va triet) or (su triet))*".