Perhaps you should try some spelling variations:
mot chieu » doi chieu, ho chieu
hoc thieu » toc thieu, hoc hien
hanh nhan » thanh nhan, danh nhan, anh nhan
tao nhung » nao nhung, sao nhung, tay nhung
nhan tao » nhan tai, nhan dan
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
chan ma » chan ta, khan ma, nhan ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (hoc thieu)) sach - hanh nhan tao nhung ((cong dan) OR (cong tan)) chan ma~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (hoc thieu)) sach - hanh nhan tao nhung ((cong dan) OR (cong tan)) chan ma.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (hoc thieu)) sach - hanh nhan tao nhung ((cong dan) OR (cong tan)) chan ma".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (hoc thieu)) sach - hanh nhan tao nhung ((cong dan) OR (cong tan)) chan ma*.