Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
pham vu » pham tu, pham va, pham vi

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 ve pham vu ((van hanh) OR (ban hanh)) tri cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu ve pham vu ((van hanh) OR (ban hanh)) tri cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ve pham vu ((van hanh) OR (ban hanh)) tri cua triet*.