Perhaps you should try some spelling variations:
chet triet » chuyen triet, thuyet triet
chat triet » phat trien, chat thien, cua triet
ban hanh » ban hang
xuc ban » duc ban, cuc ban, quoc ban
hanh le » thanh le, hanh ve, hanh de
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
ve chat » va chat, van chat
xang ro » nang ro, hang rok
ro hoi » co hoi, o hoi, mo hoi
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty xang ro hoi. hieu ((ve chat) or (va cam)) xuc ban hanh le ((chat triet) OR (chet triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty xang ro hoi. hieu ((ve chat) OR (va cam)) xuc ban hanh le ((chat triet) OR (chet triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty xang ro hoi. hieu ((ve chat) or (va cam)) xuc ban hanh le ((chat triet) OR (chet triet))".
• Adding a wildcard symbol may retrieve word variants: vu sach ty xang ro hoi. hieu ((ve chat) or (va cam)) xuc ban hanh le ((chat triet) OR (chet triet))*.