Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
thanh va » thanh van, hanh va, thanh ha
thanh vi » hanh vi, thanh ve, nhanh vi
thuc day » thuc dan, thuc vat
hieu van » hieu va, thien van, lieu va
so cach » so sach, co cach, loi cach
cach tu » cach thuc
hieu ve » hieu va
cao hoi » cau hoi, co hoi, cao hoc
tu nang » tru nang, tu nong, tu nano
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: so cach tu nang cao hoi. ((hieu ve) or (hieu van)) nham thuc day ((thanh vi) OR (thanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so cach tu nang cao hoi. ((hieu ve) OR (hieu van)) nham thuc day ((thanh vi) OR (thanh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so cach tu nang cao hoi. ((hieu ve) or (hieu van)) nham thuc day ((thanh vi) OR (thanh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: so cach tu nang cao hoi. ((hieu ve) or (hieu van)) nham thuc day ((thanh vi) OR (thanh va)) cua tre*.