Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
nhung cong » thong cong, hang cong, nhung don
trinh han » trinh quan
dung cong » dung trong
vang toan » van toan, dang toan, quang toan
ho chieu » theo chieu, hoc thieu, doi chieu
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: ho chieu sach - hanh trinh han ((((nhung cong) OR (dung cong))) or (dang cong)) vang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh han ((((nhung cong) OR (dung cong))) OR (dang cong)) vang toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trinh han ((((nhung cong) OR (dung cong))) or (dang cong)) vang toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh han ((((nhung cong) OR (dung cong))) or (dang cong)) vang toan cao*.