Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
dang trong » dung trong, dong trong, lang trong
chau tinh » cuu tinh, ha tinh, cua tinh
tranh cua » doanh cua, manh cua
trong dan » trong dang, trong san, trong tan
cua dang » cua cong, cua ban
than tap » toan tap, han tap, than cap
phan tap » phan lap, han tap, pha tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chau tinh) or (chieu xanh)) - hanh tranh cua dang trong dan ((than tap) OR (phan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chau tinh) OR (chieu xanh)) - hanh tranh cua dang trong dan ((than tap) OR (phan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chau tinh) or (chieu xanh)) - hanh tranh cua dang trong dan ((than tap) OR (phan tap))".
• Adding a wildcard symbol may retrieve word variants: doc ((chau tinh) or (chieu xanh)) - hanh tranh cua dang trong dan ((than tap) OR (phan tap))*.