Perhaps you should try some spelling variations:
cap nguoi » ca nguoi, gap nguoi, giap nguoi
nguoi san » nguoi tay, nguoi dao, nguoi ma
hang di » hang doi, hang vi, hang dien
hanh di » hanh vi, hanh de, danh di
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve cap » ve cac, le cap, ve cai
su can » su van, su cao, tu can
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sac) or (su can)) ky nang xa hoi. hieu ve cap nguoi san ((hanh di) OR (hang di)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su can)) ky nang xa hoi. hieu ve cap nguoi san ((hanh di) OR (hang di)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) or (su can)) ky nang xa hoi. hieu ve cap nguoi san ((hanh di) OR (hang di)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su can)) ky nang xa hoi. hieu ve cap nguoi san ((hanh di) OR (hang di)) cua tre*.