Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
tai cua » thai cua, tai cuc, dai cua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
dam tu » nam tu, tam tu, dam thuc
cam tu » cam thu, nam tu, tam 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 sac ky nang xa hoi. hieu ve ((dam tu) or (cam tu)) va hanh ((tai cua) OR (tri cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang xa hoi. hieu ve ((dam tu) OR (cam tu)) va hanh ((tai cua) OR (tri cua)) viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang xa hoi. hieu ve ((dam tu) or (cam tu)) va hanh ((tai cua) OR (tri cua)) viet".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang xa hoi. hieu ve ((dam tu) or (cam tu)) va hanh ((tai cua) OR (tri cua)) viet*.