Perhaps you should try some spelling variations:
thoi cua » thai cua, troi cua, thi cua
hieu van » hieu va, thien van, lieu va
ta danh » tac danh, tao danh, tap danh
hoi cua » hoi chuc
van hac » van hoc, van ha, van hai
hac toc » thac toc, cac toc
lang xa » lang ha, dang xay, lang van
toc ta » toc tay, toc thai

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 tham) OR (sach nha)) lang xa hoi. hieu van hac toc ta danh ((hoi cua) or (thoi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tham) OR (sach nha)) lang xa hoi. hieu van hac toc ta danh ((hoi cua) OR (thoi cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tham) OR (sach nha)) lang xa hoi. hieu van hac toc ta danh ((hoi cua) or (thoi cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tham) OR (sach nha)) lang xa hoi. hieu van hac toc ta danh ((hoi cua) or (thoi cua)) tre*.