Perhaps you should try some spelling variations:
hanh trinh » canh tranh
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
thanh tran » thanh trang, thanh toan, thanh tra
hoc thieu » toc thieu, hoc hien
vat nhung » va nhung, vap nhung, vai nhung
ho chieu » theo chieu, doi chieu, mot chieu
tran tap » toan tap, tran tan, tran tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) sach - ((hanh trinh) or (hanh chinh)) vat nhung cong thanh tran tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - ((hanh trinh) OR (hanh chinh)) vat nhung cong thanh tran tap.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - ((hanh trinh) or (hanh chinh)) vat nhung cong thanh tran tap*.