Perhaps you should try some spelling variations:
phuong doan » phuong loan, phuong hoang, huong dan
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
canh trinh » canh tranh, hanh trinh, canh tinh
phuong dan » phuong danh, huong dan, phuong lan
trinh va » trinh van, trinh vat, trinh ve
va hoang » van hoang, vao hoang, va hang
toan cau » 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: doi ((chieu sach) or (chieu sang)) - canh trinh va hoang ((phuong dan) or (phuong doan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu sang)) - canh trinh va hoang ((phuong dan) OR (phuong doan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu sang)) - canh trinh va hoang ((phuong dan) or (phuong doan)) toan cau*.