Perhaps you should try some spelling variations:
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
nang xa » nang x, nang ma, mang xa
hanh di » hanh vi, hanh de, hang di
tang ma » mang may, tang van
va hanh » van hanh, va thanh, va danh
cac hoc » cach hoc, cac hop, bac hoc
di cua » dai cua, doi cua, de cua
ve cac » va cac, vien cac
te san » te ban, ke san, tu san
san ky » sang ky, van ky, dan ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te san ky ((((nang xa) or (tang ma))) or (lang xa)) hoi. hieu ve cac hoc va hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ky ((((nang xa) OR (tang ma))) OR (lang xa)) hoi. hieu ve cac hoc va hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: te san ky ((((nang xa) or (tang ma))) or (lang xa)) hoi. hieu ve cac hoc va hanh di cua te*.