Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thu sach » tu sach, thuat sach, thu hoach
tay tang » tay lang, tay trung, tay quang
dong cua » dung cua, cong cua, huong cua
ban hanh » ban hang
tang xa » trang xa, tang ma, lang xa
ca cua » co cua
vi cua » vai cua, di cua
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: ((thu sach) or (thuoc sach)) tay tang xa hoi. lieu va ((dong cua) or (ca cua)) ban hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuoc sach)) tay tang xa hoi. lieu va ((dong cua) OR (ca cua)) ban hanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuoc sach)) tay tang xa hoi. lieu va ((dong cua) or (ca cua)) ban hanh vi cua tu*.