Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
nang mai » nang ma, lang mai, nang cai
thanh di » thanh doi, thanh de, thanh do
nang tai » hang tai, tang tai, sang tai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
xuc van » duc van, luc van, vuc van
ve cam » ve cham, ve cac, va cam
va cao » va cac, va co, va dao
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((nang mai) OR (nang tai)) hoi. hieu ((ve cam) or (va cao)) xuc van thanh di cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang mai) OR (nang tai)) hoi. hieu ((ve cam) OR (va cao)) xuc van thanh di cua vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang mai) OR (nang tai)) hoi. hieu ((ve cam) or (va cao)) xuc van thanh di cua vat*".