Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cau thuc » cau truc, cuu thuc, can thuc
thuc van » thuc vat, thuc dan, thuc va
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
hanh ve » hanh va, hanh kem
te sai » te tai, te bai, te lai
ha hoi » hoa hoi, ha noi, xa hoi
ve cau » ke cau, va cau, ve cac

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

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