Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chiet tach » chieu sach
hieu lang » chieu sang, hieu quang, nhieu tang
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
mang cua » manh cua, dung cua, cong cua
toan cau » toan cao, toan ban, toan tap
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu lang) or (chiet tach)) - hanh ((mang cua) or (ban cua)) thong cong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (chiet tach)) - hanh ((mang cua) OR (ban cua)) thong cong manh toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) or (chiet tach)) - hanh ((mang cua) or (ban cua)) thong cong manh toan cau*.