Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
nang mai » nang ma, nang tai, lang mai
cam thuc » am thuc, nam thuc, cam thu
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
qua cam » qua cham, qua cac, qua ca
mai hoi » mai khoi, dai hoi, lai hoi
sach v » sach va, sach y, sach vay
sach 2 » sach y

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

• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach v) OR (sach 2)) nang mai hoi. hieu qua cam thuc va hanh vi ((cua triet) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach v) OR (sach 2)) nang mai hoi. hieu qua cam thuc va hanh vi ((cua triet) or (su triet))~".
• Adding a wildcard symbol may retrieve word variants: so ((sach v) OR (sach 2)) nang mai hoi. hieu qua cam thuc va hanh vi ((cua triet) or (su triet))*.