Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, theo sach
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hieu cach » hieu cac, chieu sach, hieu ca
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((thieu sach) OR (hieu cach)) - hanh trinh cua nhung cong san toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((thieu sach) OR (hieu cach)) - hanh trinh cua nhung cong san toan cao".
• Adding a wildcard symbol may retrieve word variants: toc ((thieu sach) OR (hieu cach)) - hanh trinh cua nhung cong san toan cao*.