Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan thong » quang thong, quan trong, xuan thong
thong tang » thong mang, thong nang, trong tang
ho chiet » ho chieu, ho thiet, hoc thiet
ban hanh » ban hang
ban can » ban hang, ban quan, ban than
ban dan » ban hang, ban quan, gian dan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh trinh quan thong thong tang ((ban can) OR (((ban dan) OR (ban hanh))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - hanh trinh quan thong thong tang ((ban can) or (((ban dan) OR (ban hanh))))~".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh trinh quan thong thong tang ((ban can) or (((ban dan) OR (ban hanh))))*.