Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac tru » ca tru, cac tro, cac thu
ve cac » va cac, vien cac
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: tu ((cac ky) or (sach y)) nang xa hoi. hieu ve cac tru ((va thanh) OR (ban thanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((cac ky) OR (sach y)) nang xa hoi. hieu ve cac tru ((va thanh) OR (ban thanh)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((cac ky) or (sach y)) nang xa hoi. hieu ve cac tru ((va thanh) OR (ban thanh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((cac ky) or (sach y)) nang xa hoi. hieu ve cac tru ((va thanh) OR (ban thanh)) vi cua triet*.