Perhaps you should try some spelling variations:
cac loc » cac lop, cac toc, cac hoc
va hanh » van hanh, va thanh, ban hanh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, dia danh
vi cua » vai cua, di cua
sac ky » sai ky
ve cac » va cac, vien cac
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: tu ((sac ky) or (cac ky)) nang xa hoi. hieu ve cac loc ((va hanh) OR (va danh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) nang xa hoi. hieu ve cac loc ((va hanh) OR (va danh)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) or (cac ky)) nang xa hoi. hieu ve cac loc ((va hanh) OR (va danh)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (cac ky)) nang xa hoi. hieu ve cac loc ((va hanh) OR (va danh)) vi cua te*.