Perhaps you should try some spelling variations:
luan nhung » luan chung, luan hung, quan nhung
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, hoc hien, hoc dieu
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
than tap » toan tap, han tap, than cap
phan tap » phan lap, han tap, pha tap

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

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