Perhaps you should try some spelling variations:
hanh trinh » canh tranh
hoc thieu » hoc hien
luan hung » luan chung, lan hung, luan ung
hung cong » nhung cong, hung cuong, phung cong
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) OR (toc thieu)) sach - ((hanh trinh) or (hanh chinh)) luan hung cong hach toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) sach - ((hanh trinh) OR (hanh chinh)) luan hung cong hach toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (toc thieu)) sach - ((hanh trinh) or (hanh chinh)) luan hung cong hach toan cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (toc thieu)) sach - ((hanh trinh) or (hanh chinh)) luan hung cong hach toan cao*.