Perhaps you should try some spelling variations:
thien van » thi van
toc cach » hoc cach, truoc cach, cuoc cach
thuc dan » thuc hanh, hoc dan, thuc vat
toc sach » hoc sach, doc sach, thuoc sach
lang xa » lang ha, dang xay, lang van
tu lang » cu lang, tu lanh, xu lang
thuc va » thuc vat, thuc day
hang vi » hang va, hanh vi, hang di
vi cua » vai cua, di cua
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: ((toc cach) or (toc sach)) tu lang xa hoi. thien van nam ((thuc va) or (thuc dan)) hang vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc cach) OR (toc sach)) tu lang xa hoi. thien van nam ((thuc va) OR (thuc dan)) hang vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((toc cach) or (toc sach)) tu lang xa hoi. thien van nam ((thuc va) or (thuc dan)) hang vi cua te*.