Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
qua trinh » qua kinh
hieu van » hieu va, thien van, lieu va
luat tuc » luat thue
xa trinh » xa tinh, va trinh, xuan trinh
nang xa » nang x, lang xa, nang ma
lam tuc » lam thuoc, lam truoc, nam thuc
vi cua » vai cua, di cua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang xa hoi. hieu van ((lam tuc) OR (luat tuc)) ((xa trinh) or (qua trinh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu van ((lam tuc) OR (luat tuc)) ((xa trinh) OR (qua trinh)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. hieu van ((lam tuc) OR (luat tuc)) ((xa trinh) or (qua trinh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu van ((lam tuc) OR (luat tuc)) ((xa trinh) or (qua trinh)) vi cua triet*.