Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
thong van » trong van, thong va, thong quan
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban cua
tong van » trong van, tang van, song van
han tap » han tai, toan tap, nhan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - hanh ((tang cua) or (mang cua)) nhung ((tong van) or (thong van)) han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh ((tang cua) OR (mang cua)) nhung ((tong van) OR (thong van)) han tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh ((tang cua) or (mang cua)) nhung ((tong van) or (thong van)) han tap*.