Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doanh va » doan va, doanh tai, doanh cua
thuc day » thuc dan, thuc vat
sach ty » sach y, sach tu, sach thu
danh va » hanh va, anh va, dan va
su sach » so sach, vu sach
thuc va » thuc vat, thuc dan
hieu va » lieu va, hieu qua
nang co » nang cao, nang doc, nang noi
ty nang » ky nang, ty xang, ty hang
co hoi » co hoc, co loi
va am » va lam, va cam

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 ty nang co hoi. hieu va am ((thuc va) or (thuc day)) ((danh va) OR (doanh va)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang co hoi. hieu va am ((thuc va) OR (thuc day)) ((danh va) OR (doanh va)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang co hoi. hieu va am ((thuc va) or (thuc day)) ((danh va) OR (doanh va)) cua triet*".