Perhaps you should try some spelling variations:
hieu dan » hieu van, sieu dan, hieu dac
toc sach » hoc sach, doc sach, thuoc sach
lang van » dang van, tang van, hoang van
tinh di » tinh doi, trinh di, tinh da
va tinh » may tinh
dan dat » dung dat, dong dat, dinh dat
van hoi » van hoa, van hoc, van hoe
ty lang » tay lang, ty xang, ty hang
di cua » dai cua, doi cua, de 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: ((te sach) OR (toc sach)) ty lang van hoi. hieu dan dat (nuoc or ngoc) va tinh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty lang van hoi. hieu dan dat (nuoc OR ngoc) va tinh di cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ty lang van hoi. hieu dan dat (nuoc or ngoc) va tinh di cua tu".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ty lang van hoi. hieu dan dat (nuoc or ngoc) va tinh di cua tu*.