Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuc dan » thuc hanh, hoc dan, thuc vat
cau thuc » cau truc, cuu thuc, can thuc
hanh de » hanh ve, hanh kem
hieu ve » hieu va, hieu van
lang ha » long ha
ky lang » ky nang, ky dang, ky tang
te sach » toc sach
ha hoi » hoa hoi, ha noi, xa hoi
ve cau » ke cau, va cau, ve cac
te sac » te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sac) OR (te sach)) ky lang ha hoi. hieu ve cau thuc dan ((hanh de) or (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te sach)) ky lang ha hoi. hieu ve cau thuc dan ((hanh de) OR (hanh vi)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) OR (te sach)) ky lang ha hoi. hieu ve cau thuc dan ((hanh de) or (hanh vi)) cua triet".
• Adding a wildcard symbol may retrieve word variants: ((te sac) OR (te sach)) ky lang ha hoi. hieu ve cau thuc dan ((hanh de) or (hanh vi)) cua triet*.