Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc thien » hoc hien, hoc thieu, hoc tien
hoc thiet » hoc thieu, hoc thuyet, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
van toan » van tuan, van tan, van thanh
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thien) or (hoc thiet)) tinh - hanh trinh cua bang cong ((van toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thien) OR (hoc thiet)) tinh - hanh trinh cua bang cong ((van toan) OR (dan than)) cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thien) or (hoc thiet)) tinh - hanh trinh cua bang cong ((van toan) or (dan than)) cau*.