Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
tay lang » tai lang, tay tang, tay quang
xa thanh » va thanh, ha thanh, ta thanh
thanh vi » hanh vi, thanh va, thanh ve
van hau » van ha, van hai, van dau
y lang » o lang, _ lang, yen lang
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 ((y lang) OR (tay lang)) xa hoi. hieu ((van nam) or (van hau)) tuc xa thanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y lang) OR (tay lang)) xa hoi. hieu ((van nam) OR (van hau)) tuc xa thanh vi cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((y lang) OR (tay lang)) xa hoi. hieu ((van nam) or (van hau)) tuc xa thanh vi cua tu".
• Adding a wildcard symbol may retrieve word variants: thu sach ((y lang) OR (tay lang)) xa hoi. hieu ((van nam) or (van hau)) tuc xa thanh vi cua tu*.