Perhaps you should try some spelling variations:
gat thanh » dat thanh, tat thanh, vat thanh
thu huong » thu cong
thanh lai » thanh hai, thanh lap, thanh loi
thu nang » thi nang, thu hang, thu bang
thuc gat » thuc vat, thuc giai, thuc hoat
so sach » so sanh, bo sach, co sach
qua nam » quan nam, quang nam, qua nhat
cua nam » cua tam, cua ngan, cua nhan
lai cua » dai cua, hai cua, lai chau
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((thu nang) or (thu huong)) xa hoi. hieu ((qua nam) OR (cua nam)) thuc gat thanh lai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((thu nang) OR (thu huong)) xa hoi. hieu ((qua nam) OR (cua nam)) thuc gat thanh lai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((thu nang) or (thu huong)) xa hoi. hieu ((qua nam) OR (cua nam)) thuc gat thanh lai cua tu".
• Adding a wildcard symbol may retrieve word variants: so sach ((thu nang) or (thu huong)) xa hoi. hieu ((qua nam) OR (cua nam)) thuc gat thanh lai cua tu*.