Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
cong quang » luong quang, thong quang, duong quang
hoc thieu » toc thieu, hoc hien
lanh manh » lanh tranh, van manh, anh anh
cong lang » cong vang, cong luong, cong ngang
phan dau » phan tu, hang dau
lan anh » van anh, tuan anh

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 - ((lanh manh) or (lan anh)) va nhung ((cong lang) or (cong quang)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((lanh manh) OR (lan anh)) va nhung ((cong lang) OR (cong quang)) phan dau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((lanh manh) or (lan anh)) va nhung ((cong lang) or (cong quang)) phan dau*.