Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
tong tieng » tong tien, tvqg tieng, vung tieng
hoc chieu » hoc thieu, hoc hien, hoc dieu
trinh cua » tinh cua, trinh luat, trinh quan
ho chieu » theo chieu, hoc thieu, doi chieu
viet hap » viet phap, viet ha, viet gap
hap ban » lap ban, hap dan, nhat ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (ho chieu)) sach - hanh trinh cua ((tong tieng) OR (trong tieng)) viet hap ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (ho chieu)) sach - hanh trinh cua ((tong tieng) OR (trong tieng)) viet hap ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (ho chieu)) sach - hanh trinh cua ((tong tieng) OR (trong tieng)) viet hap ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (ho chieu)) sach - hanh trinh cua ((tong tieng) OR (trong tieng)) viet hap ban*.