Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
pham thuc » phap thuc, nham thuc, pham thu
thanh via » thanh va, thanh vien, thanh vinh
day thanh » dao thanh, dat thanh, da thanh
pham chuc » pham duc, pham huu, kham chua
via cua » gia cua, gian cua, giau cua
hieu vu » hieu va, hieu ve, hieu su
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
te cac » tu cac, ve cac, te cao
te sac » te sach, te san

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) or (te cac)) ky dang xa hoi. hieu vu ((pham thuc) OR (pham chuc)) day thanh via cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te cac)) ky dang xa hoi. hieu vu ((pham thuc) OR (pham chuc)) day thanh via cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) or (te cac)) ky dang xa hoi. hieu vu ((pham thuc) OR (pham chuc)) day thanh via cua triet".
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te cac)) ky dang xa hoi. hieu vu ((pham thuc) OR (pham chuc)) day thanh via cua triet*.