Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh tai, hanh van
thuc dan » thuc hanh, hoc dan, thuc vat
te sach » toc sach
sach ho » sach hoi, sach ha, sach lo
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
thuc va » thuc vat, thuc day
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ho nang » thi nang, kha nang, cao nang
ve cam » ve cham, ve cac, 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: te sach ho nang xa hoi. hieu ve cam ((thuc va) OR (thuc dan)) ((hanh vai) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ho nang xa hoi. hieu ve cam ((thuc va) OR (thuc dan)) ((hanh vai) OR (hanh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ho nang xa hoi. hieu ve cam ((thuc va) OR (thuc dan)) ((hanh vai) or (hanh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ho nang xa hoi. hieu ve cam ((thuc va) OR (thuc dan)) ((hanh vai) or (hanh va)) cua tre*.