Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
cong tinh » cong trinh, cong vinh, long tinh
chu sach » cau sach, thu sach, chuc hach
ha trong » hoa trong, hai trong, hat trong
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: theo ((chu sach) or (chieu sach)) - ((hanh tang) or (hanh mang)) ha trong cong tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu sach) OR (chieu sach)) - ((hanh tang) OR (hanh mang)) ha trong cong tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((chu sach) or (chieu sach)) - ((hanh tang) or (hanh mang)) ha trong cong tinh toan cao*.