Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
dinh thi » dinh tri
vat dinh » va dinh, van dinh, vat sinh
lam thuc » lam thuoc, am thuc, nam thuc
thi lan » thi hanh, thi nang, thi lien
thi duc » thi cuc, thi dua, thi du
thi van » thi hanh, thi nang
lanh xa » lang xa, lanh va, canh xa
tu lanh » tu hanh, tu lenh, tu manh
tu sach » su sach, te sach, tu cach
duc tre » duoc tren, duc tien

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (tu sach)) tu lanh xa hoi. ((thi van) or (thi lan)) lam thuc vat dinh thi duc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) tu lanh xa hoi. ((thi van) OR (thi lan)) lam thuc vat dinh thi duc tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) tu lanh xa hoi. ((thi van) or (thi lan)) lam thuc vat dinh thi duc tre*.