Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc chinh » hoan chinh, hoc sinh, hoc kinh
trinh cua » tinh cua, trinh luat, trinh quan
tong cong » trong cong, cong cong, dung cong
ngang cho » nang cho, sang cho, hang cho
ngang tho » nguong tho, ang tho, bang tho
ho chinh » cho chinh, hoa chinh, do chinh
cua tong » cua cong, cua dong, cua nong

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

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