Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh van » trinh han, trinh quan, trinh toan
lang cong » dang cong, bang cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
van lang » van nang, va lang, van hang
van tuan » van quan, van ban, anh tuan
van tan » van ban, van tai, van thanh

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 van lang cong ((((van tan) OR (van tuan))) or (tinh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh van lang cong ((((van tan) OR (van tuan))) OR (tinh toan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trinh van lang cong ((((van tan) OR (van tuan))) or (tinh toan)) cau*".