Perhaps you should try some spelling variations:
chien thang » chien thuong, chien chong, hien trang
hien khang » hien khanh, thieu khang, hien hanh
cua trong » cua truong, cua trung, ca trong
qua trong » quan trong, qua trinh, qua song
cong dan » cong san, cong tan, huong dan
dan hang » ban hang, van hang, dat hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien khang) OR (chien thang)) - canh tranh ((cua trong) or (qua trong)) cong dan hang va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien khang) OR (chien thang)) - canh tranh ((cua trong) OR (qua trong)) cong dan hang va.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien khang) OR (chien thang)) - canh tranh ((cua trong) or (qua trong)) cong dan hang va".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien khang) OR (chien thang)) - canh tranh ((cua trong) or (qua trong)) cong dan hang va*.