Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trinh » canh tranh
hoc thieu » toc thieu, hoc hien
luat dung » suat dung, luat chung, luat quang
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tran tan » tran tuan, tran van, tran thanh

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 trinh) or (hanh chinh)) luat dung cong tan tran tan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((hanh trinh) OR (hanh chinh)) luat dung cong tan tran tan.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((hanh trinh) or (hanh chinh)) luat dung cong tan tran tan*.