Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
cac loc » cac lop, cac toc, cac hoc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
te cac » tu cac, ve cac, te cao
vi cua » vai cua, di cua

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 viec cac loc ((va hanh) or (ban 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 viec cac loc ((va hanh) OR (ban thanh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te cac ky ((nang xa) or (lang xa)) hoi. hieu viec cac loc ((va hanh) or (ban thanh)) vi cua tre*.