Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
lang van » dang van, tang van, hoang van
hanh tai » hang tai, han tai, hinh tai
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
cua te » cua tu
tuc va » thuc va, truc va, tuc xa
xuc va » duc va, luc va, xac va
va cao » va cac, va co, va dao

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 _ lang van hoa. hieu va cao ((xuc va) OR (tuc va)) ((hanh tai) or (thanh tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach _ lang van hoa. hieu va cao ((xuc va) OR (tuc va)) ((hanh tai) OR (thanh tai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach _ lang van hoa. hieu va cao ((xuc va) OR (tuc va)) ((hanh tai) or (thanh tai)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach _ lang van hoa. hieu va cao ((xuc va) OR (tuc va)) ((hanh tai) or (thanh tai)) cua te*.