Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hang dan » hang dau, hang ban, tang dan
van hang » van khang, van hoang, van thang
thuc van » thuc vat, thuc dan, thuc va
sach ky » sac ky, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
le nam » ly nam, he nam, le na
dan su » dang su
ve nam » he nam, va nam, te nam

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