Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
nhung don » nhung van, nhung bo
hang cong » dang cong, hang nong, bang cong
tac thanh » bac thanh, cac thanh, tcc thanh
ho chieu » theo chieu, doi chieu, mot chieu

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 cua ((nhung don) or (hang cong)) tac thanh san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - hanh trinh cua ((nhung don) OR (hang cong)) tac thanh san*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) sach - hanh trinh cua ((nhung don) or (hang cong)) tac thanh san*".