Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
cua tre » cua te, cuu tre, cua triet
va hanh » van hanh, va danh, ban hanh
nang xa » nang x, lang xa, nang ma
lang ha » long ha
hieu ve » hieu va, hieu van
cac loc » cac lop, cac toc, cac hoc
vi cua » vai cua, di cua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
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 sac ky ((nang xa) or (lang ha)) hoi. hieu ve cac loc ((va hanh) or (va thanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((nang xa) OR (lang ha)) hoi. hieu ve cac loc ((va hanh) OR (va thanh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang xa) or (lang ha)) hoi. hieu ve cac loc ((va hanh) or (va thanh)) vi cua tre*.