Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuc dat » thuc vat, thuc dan, thuc day
hang hai » hoang hai, hang tai, thanh hai
hang hoi » hang hoa, hang doi, hang loi
nam thuc » nam thuoc, am thuc, nam thu
hieu ve » hieu va, hieu van
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
ve nam » he nam, va nam, le nam
sac ky » cac ky, sai ky

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