Perhaps you should try some spelling variations:
thanh duc » thach duc, than duc, thinh duc
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
sach ky » sac ky, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
vi cua » vai cua, di cua

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

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