Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
va hanh » va thanh, va danh, ban hanh
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
nang xa » lang xa, nang ma, mang xa
de cua » le cua, te cua, dieu cua
ve cac » va cac, vien 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 sach y ((nang xa) or (nang x)) hoi. hieu ve cac xuc ((va hanh) or (van hanh)) de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang xa) OR (nang x)) hoi. hieu ve cac xuc ((va hanh) OR (van hanh)) de cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang xa) or (nang x)) hoi. hieu ve cac xuc ((va hanh) or (van hanh)) de cua tre*.