Perhaps you should try some spelling variations:
sanh thu » sach thu, san thu, doanh thu
thu tang » thu trang, thu thang, thu hang
pham duy » pham duc
phan duc » pham duc, phan tu, phan dau
so sanh » do sanh
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
van hoc » van hoa
van hoi » van hoa, van hoe, van loi
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh thu tang ((van hoi) OR (van hoc)). hieu va ((phan duc) or (pham duy)) va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh thu tang ((van hoi) OR (van hoc)). hieu va ((phan duc) OR (pham duy)) va hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh thu tang ((van hoi) OR (van hoc)). hieu va ((phan duc) or (pham duy)) va hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: so sanh thu tang ((van hoi) OR (van hoc)). hieu va ((phan duc) or (pham duy)) va hanh vi cua te*.