Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh tri » thanh tra, thanh tai, chinh tri
ban thanh » ban hanh, ban hang
vien cac » vien bach, vien dai, vien da
cuu ban » cuu van, cua ban, cuu san
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
ve cac » va cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sac ky)) nang xa hoi. hieu ((ve cac) OR (vien cac)) cuu ban thanh tri cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang xa hoi. hieu ((ve cac) OR (vien cac)) cuu ban thanh tri cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sac ky)) nang xa hoi. hieu ((ve cac) OR (vien cac)) cuu ban thanh tri cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) nang xa hoi. hieu ((ve cac) OR (vien cac)) cuu ban thanh tri cua triet*.