Perhaps you should try some spelling variations:
tien thanh » tien thinh, tran thanh, den thanh
hoc tien » hoc tieng, hoc hien, hoc vien
van hang » van khang, van hoang, van thang
nong dan » cong dan, nong san, nguong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
va hang » va nang, va lang, va hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tien thanh - thanh cong ((va hang) OR (van hang)) nong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc tien thanh - thanh cong ((va hang) OR (van hang)) nong dan toan cao*".