Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, nang ma, mang xa
va hanh » van hanh, va danh, ban hanh
cac loc » cac lop, cac toc, cac hoc
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ve cac » va cac, vien cac
vi cua » vai cua, di cua
te cac » tu cac, te cao, de 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 cac ky ((nang xa) or (lang xa)) 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 cac ky ((nang xa) OR (lang xa)) hoi. hieu ve cac loc ((va hanh) OR (va thanh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te cac ky ((nang xa) or (lang xa)) hoi. hieu ve cac loc ((va hanh) or (va thanh)) vi cua tre*.