Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chieu sach » chinh sach, chiet tach, chieu sang
lieu tinh » trieu tinh, diep tinh, bien tinh
trinh vat » trinh van, trinh luat, sinh vat
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
vat dung » van dung, va dung, viet dung
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (lieu tinh)) - hanh trinh vat dung cong manh ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (lieu tinh)) - hanh trinh vat dung cong manh ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (lieu tinh)) - hanh trinh vat dung cong manh ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (lieu tinh)) - hanh trinh vat dung cong manh ((toan tap) OR (toan ban))*.