Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hieu sang » hieu lang, hieu quang, nhieu tang
cua nhung » va nhung
tan nhanh » tai nhanh, tan nhan, tan thanh
nhanh cau » nhanh cay, thanh chau, nhanh ha
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu sang) OR (chieu sang)) - ((hanh trung) or (hanh trinh)) cua nhung cong tan nhanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu sang) OR (chieu sang)) - ((hanh trung) OR (hanh trinh)) cua nhung cong tan nhanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu sang) OR (chieu sang)) - ((hanh trung) or (hanh trinh)) cua nhung cong tan nhanh cau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sang) OR (chieu sang)) - ((hanh trung) or (hanh trinh)) cua nhung cong tan nhanh cau*.