Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, chau tinh, kieu tinh
thong cong » trong cong, tong cong, thong thong
lieu tinh » trieu tinh, diep tinh, bien tinh
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap
lanh va » hanh va, anh va, lanh dao
minh va » tinh va, sinh va, sinh vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu tinh) OR (lieu tinh)) - canh ((lanh va) OR (minh va)) thong cong tan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tinh) OR (lieu tinh)) - canh ((lanh va) OR (minh va)) thong cong tan toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) OR (lieu tinh)) - canh ((lanh va) OR (minh va)) thong cong tan toan cau*.