Perhaps you should try some spelling variations:
chau triet » cau triet, cau trieu, chau tuyet
cua triet » cua viet, su triet, va triet
thai tuc » thai thuc, thai thuy, thai hoc
hieu van » hieu va, thien van, lieu va
dan lai » dan loai, dan lap, dan lat
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
hac tuc » thac toc
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
va dan » ca dan, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang xa hoi. hieu van ((hac tuc) OR (thai tuc)) va dan lai ((chau triet) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu van ((hac tuc) OR (thai tuc)) va dan lai ((chau triet) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu van ((hac tuc) OR (thai tuc)) va dan lai ((chau triet) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu van ((hac tuc) OR (thai tuc)) va dan lai ((chau triet) or (cua triet))*.