Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh hang » thanh hang, hang hang, hanh han
ho chiet » ho chieu, ho thiet, hoc thiet
cong tan » cong tac, cong san, cong thanh
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap
va nang » van nang, da nang, kha nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - hanh hang ((va nang) OR (cam nang)) cong tan ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh hang ((va nang) OR (cam nang)) cong tan ((toan tai) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - hanh hang ((va nang) OR (cam nang)) cong tan ((toan tai) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh hang ((va nang) OR (cam nang)) cong tan ((toan tai) or (toan cao))*.