Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
tran chau » tranh chap, tran huu
chu sach » thu sach, chieu sach, chuc hach
cau sach » cao sach, hau sach, rau sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao ((chu sach) or (cau sach)) - hanh trinh quan ((nhung cong) OR (thong cong)) tan tran chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chu sach) OR (cau sach)) - hanh trinh quan ((nhung cong) OR (thong cong)) tan tran chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chao ((chu sach) or (cau sach)) - hanh trinh quan ((nhung cong) OR (thong cong)) tan tran chau".
• Adding a wildcard symbol may retrieve word variants: chao ((chu sach) or (cau sach)) - hanh trinh quan ((nhung cong) OR (thong cong)) tan tran chau*.