Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
lang van » dang van, tang van, hoang van
hanh doi » hanh noi, hang doi, hanh moi
ly lang » ly hang, ly vang, le lang
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
bach » sach, cach, bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach ly lang van hoi. hieu ve cam ((duc va) or (thuc vat)) ((hanh doi) OR (thanh doi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach ly lang van hoi. hieu ve cam ((duc va) OR (thuc vat)) ((hanh doi) OR (thanh doi)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu bach ly lang van hoi. hieu ve cam ((duc va) or (thuc vat)) ((hanh doi) OR (thanh doi)) cua tre*".