Perhaps you should try some spelling variations:
chua tinh » cua tinh, cha tinh, thuat tinh
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
dung cong » dung trong
chu tinh » chau tinh, cuu tinh, chu tich
cong tam » cong tac, cong tan, cong nam
tam toan » tap toan, tam than, pham 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 ((chu tinh) OR (chua tinh)) - ((hanh tang) or (hanh mang)) xay dung cong tam toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu tinh) OR (chua tinh)) - ((hanh tang) OR (hanh mang)) xay dung cong tam toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu tinh) OR (chua tinh)) - ((hanh tang) or (hanh mang)) xay dung cong tam toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chu tinh) OR (chua tinh)) - ((hanh tang) or (hanh mang)) xay dung cong tam toan cao*.