Perhaps you should try some spelling variations:
truong cao » truong dai
nam truong » nam trong, nam trung, lam truong
su triet » su viet, su tien, ve triet
phan tai » pham tai, nhan tai, phan thi
cao phan » co phan, cho phan, cac phan
hieu van » hieu va, thien van, lieu va
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
tai su » tai so, tai tu, lai su
te san » te ban, tu san, ta san
ke san » ke dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te san) OR (ke san)) ky ((nang xa) or (nang ma)) hoi. hieu van nam truong cao phan tai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te san) OR (ke san)) ky ((nang xa) OR (nang ma)) hoi. hieu van nam truong cao phan tai su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te san) OR (ke san)) ky ((nang xa) or (nang ma)) hoi. hieu van nam truong cao phan tai su triet".
• Adding a wildcard symbol may retrieve word variants: ((te san) OR (ke san)) ky ((nang xa) or (nang ma)) hoi. hieu van nam truong cao phan tai su triet*.