Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
thai cua » than cua, tai cuc, tri cua
ban thai » ban than, ban thi, ban tai
ban ban » ban banh, van ban, can ban
xuc ban » duc ban, cuc ban, quoc ban
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty xang, ty hang
so hai » son hai, su hai, so ha
ha xuc » hoa xuc, ha duc, chat xuc
cua te » cua tu
o hai » co hai, o lai, _ hai

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 ty nang ((o hai) or (so hai)). ((hieu van) OR (hieu va)) ha xuc ban ban thai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ((o hai) OR (so hai)). ((hieu van) OR (hieu va)) ha xuc ban ban thai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang ((o hai) or (so hai)). ((hieu van) OR (hieu va)) ha xuc ban ban thai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ((o hai) or (so hai)). ((hieu van) OR (hieu va)) ha xuc ban ban thai cua te*.