Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
lang xa » lang ha, dang xay, lang van
benh de » benh ve, benh he, benh da
ha quoc » han quoc, he quoc, va quoc
quoc bo » quoc bao, nuoc bo, quoc co
van ha » van hoa, van chat, van hanh
y lang » o lang, _ lang, tay lang
cua te » cua tu

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)) y lang xa hoi. hieu van ha quoc bo ((benh de) or (menh de)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y lang xa hoi. hieu van ha quoc bo ((benh de) OR (menh de)) cua te.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) y lang xa hoi. hieu van ha quoc bo ((benh de) or (menh de)) cua te*.