Perhaps you should try some spelling variations:
nhanh lang » nhanh quang, nhanh thang, nhan dang
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
lieu tinh » trieu tinh, diep tinh, bien tinh
hanh tang » hanh trang, anh tang, hanh mang
cong tinh » cong trinh, cong vinh, long tinh
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu lang) or (lieu tinh)) - ((hanh tang) or (nhanh lang)) va nhung cong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (lieu tinh)) - ((hanh tang) OR (nhanh lang)) va nhung cong tinh toan tap.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (lieu tinh)) - ((hanh tang) or (nhanh lang)) va nhung cong tinh toan tap*.