Perhaps you should try some spelling variations:
ve triet » va trien
thuc dan » thuc hanh, hoc dan, thuc vat
su triet » su viet, su tien
hanh tai » thanh tai, hang tai, han tai
dan hanh » dang hanh, dan khanh, dan thanh
nam thuc » nam thuoc, am thuc, nam thu
hieu ha » hieu hoa, hieu va, hieu ca
sach ky » sac ky, sach ty, sach kem
nang xa » nang x, lang xa, nang ma

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 ky) or (sach y)) nang xa hoi. hieu ha nam thuc dan hanh tai ((su triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sach y)) nang xa hoi. hieu ha nam thuc dan hanh tai ((su triet) OR (ve triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) or (sach y)) nang xa hoi. hieu ha nam thuc dan hanh tai ((su triet) OR (ve triet))*".