Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
lang van » dang van, tang van, hoang van
te sach » toc sach
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
y lang » o lang, _ lang, tay lang
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: ((te sach) or (thuoc sach)) y lang van hoi. hieu ve cham ((tu van) OR (tu va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) y lang van hoi. hieu ve cham ((tu van) OR (tu va)) hanh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuoc sach)) y lang van hoi. hieu ve cham ((tu van) OR (tu va)) hanh vi cua te*".