Perhaps you should try some spelling variations:
hoc sach » hoc cac, hoc anh
lang van » dang van, tang van, hoang van
cac thuc » cach thuc, cac thu, can thuc
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
qua cac » cua cac
van hoi » van hoa, van hoc, van hoe
cua tuc » cua duc, cua tu, cua thuoc
so sanh » do sanh
v lang » va lang, o lang, _ lang
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((hoc sach) OR (hoc sinh))) or (so sanh)) v lang van hoi. hieu qua cac thuc va danh vi cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((hoc sach) OR (hoc sinh))) OR (so sanh)) v lang van hoi. hieu qua cac thuc va danh vi cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((hoc sach) OR (hoc sinh))) or (so sanh)) v lang van hoi. hieu qua cac thuc va danh vi cua tuc".
• Adding a wildcard symbol may retrieve word variants: ((((hoc sach) OR (hoc sinh))) or (so sanh)) v lang van hoi. hieu qua cac thuc va danh vi cua tuc*.