Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh trinh » canh tranh, hanh chinh
tieu sach » chieu sach, dien sach, te sach
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
dan chan » dan gian, dan ca, van chat
chan tap » han tap, phan tap, chan ta

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - hanh trinh cua ((dung cong) or (thong cong)) dan chan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - hanh trinh cua ((dung cong) OR (thong cong)) dan chan tap.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - hanh trinh cua ((dung cong) or (thong cong)) dan chan tap*.