Perhaps you should try some spelling variations:
nhanh mang » nhanh lang, nhanh quang, nhanh thang
nhung cong » dung cong, thong cong, hang cong
trinh toan » tinh toan, thanh toan, trinh han
theo chua » theo chu, ho chua, cheo cua
chua nang » chuc nang, chua xang, kha nang
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » hanh trang, nhanh lang, thanh hang
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chua nang - ((hanh tang) or (((nhanh mang) OR (hanh mang)))) va nhung cong trinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chua nang - ((hanh tang) OR (((nhanh mang) OR (hanh mang)))) va nhung cong trinh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chua nang - ((hanh tang) or (((nhanh mang) OR (hanh mang)))) va nhung cong trinh toan ban".
• Adding a wildcard symbol may retrieve word variants: theo chua nang - ((hanh tang) or (((nhanh mang) OR (hanh mang)))) va nhung cong trinh toan ban*.