Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
luan lang » luan nang, quan lang, luan tang
lan lang » ban lang, lan tang, van lang
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan tap » han tap, phan tap, chan ta

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 chinh ((luan lang) or (lan lang)) cong dan chan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh chinh ((luan lang) OR (lan lang)) cong dan chan tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh chinh ((luan lang) or (lan lang)) cong dan chan tap*.