Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hang » van khang, van hoang, van thang
thuc van » thuc vat, thuc dan, thuc va
lam thuc » lam thuoc, am thuc, nam thuc
hieu van » hieu va, thien van, lieu va
hang de » hoang de, hanh de, hang di
van lam » van nam
tu sach » thu sach, te sach, vu sach
nang ma » tang ma, sang ma, nang cao
su sach » so sach, vu sach
tu cach » tu cac
de cua » le cua, te cua, dieu cua
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((tu sach) OR (tu cach))) or (su sach)) ky nang ma hoi. hieu van lam thuc van hang de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (tu cach))) OR (su sach)) ky nang ma hoi. hieu van lam thuc van hang de cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu sach) OR (tu cach))) or (su sach)) ky nang ma hoi. hieu van lam thuc van hang de cua triet".
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) OR (tu cach))) or (su sach)) ky nang ma hoi. hieu van lam thuc van hang de cua triet*.