Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
mot chieu » doi chieu, ho chieu
hoc thieu » toc thieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
cua thong » cua thuong, cua khong, cua tong
cong tam » cong tac, cong tan, dong tam
cong nam » dong nam, uong nam, thong nam
toan tap » toan ban

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

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