Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, chau tinh, kieu tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
canh manh » lanh manh, canh tranh, cach mang
tong cong » trong cong, cong cong, dung cong
vang toan » van toan, quang toan, vang trang
dang toan » dang tran, dan toan, dung toan
manh cua » doanh cua, ban cua
cua tong » cua cong, cua dong, cua nong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu tinh) or (lieu tinh)) - canh manh cua tong cong ((vang toan) or (dang toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (lieu tinh)) - canh manh cua tong cong ((vang toan) OR (dang toan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (lieu tinh)) - canh manh cua tong cong ((vang toan) or (dang toan)) cao*.