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