Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
nhung cong » dung cong, thong cong, hang cong
chau tinh » cuu tinh, ha tinh, cua tinh
tang cua » mang cua, tang luan, thong cua
hang cua » mang cua, hang ca, huong cua
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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: theo ((hieu nganh) OR (chau tinh)) - hanh ((tang cua) OR (hang cua)) nhung cong tan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu nganh) OR (chau tinh)) - hanh ((tang cua) OR (hang cua)) nhung cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu nganh) OR (chau tinh)) - hanh ((tang cua) OR (hang cua)) nhung cong tan toan cao*.