Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhanh mang » nhanh lang, hanh mang, nhanh quang
hieu manh » chieu xanh, hieu nganh, dieu hanh
bang cong » dang cong, bang song, hang cong
cong dan » cong san, cong tan, huong dan
toan tap » toan ban
toan cao » toan ban
mang va » mang vua, hang va, bang va
va bang » va nang, va lang, va 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 ((hieu manh) or (chieu tinh)) - nhanh mang va bang cong dan ((toan tap) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chieu tinh)) - nhanh mang va bang cong dan ((toan tap) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu tinh)) - nhanh mang va bang cong dan ((toan tap) or (toan cao))*.