Perhaps you should try some spelling variations:
chiet tach » chieu sach
hieu manh » chieu xanh, hieu nganh, dieu hanh
hang cong » dang cong, hang nong, bang cong
cong vinh » cong trinh, trong vinh, cong viec
vinh toan » tinh toan, hinh toan, minh toan
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban cua
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 manh) or (chiet tach)) - hanh ((tang cua) or (mang cua)) hang cong vinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chiet tach)) - hanh ((tang cua) OR (mang cua)) hang cong vinh toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chiet tach)) - hanh ((tang cua) or (mang cua)) hang cong vinh toan cao*.