Perhaps you should try some spelling variations:
khong thong » thong thong, khong trong, thong thuong
nhanh lang » nhanh quang, nhanh thang, nhan dang
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tang » hanh trang, anh tang, hanh mang
cua khong » hua khong, cua phuong, cua thuong
tan toan » tan tran, van toan, dan toan
tap toan » tap doan, tap quan, bai toan

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 lang - ((hanh tang) or (nhanh lang)) cua khong thong ((tan toan) OR (tap toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - ((hanh tang) OR (nhanh lang)) cua khong thong ((tan toan) OR (tap toan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo hieu lang - ((hanh tang) or (nhanh lang)) cua khong thong ((tan toan) OR (tap toan)) ban".
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - ((hanh tang) or (nhanh lang)) cua khong thong ((tan toan) OR (tap toan)) ban*.