Perhaps you should try some spelling variations:
thuc van » thuc dan, thuc va, thuc hanh
te sach » toc sach
lang ha » long ha
hieu le » hieu ve, hieu he, hieu ly
y lang » o lang, _ lang, tay lang
ha hoi » hoa hoi, ha noi, xa hoi
le nam » ly nam, he nam, le na
vi cua » vai cua, di 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 y lang ha hoi. hieu le nam ((thuc van) or (thuc vat)) hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang ha hoi. hieu le nam ((thuc van) OR (thuc vat)) hanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: te sach y lang ha hoi. hieu le nam ((thuc van) or (thuc vat)) hanh vi cua tu*.