Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
thu nang » thi nang, thu hang, tho nang
hoang de » hoang _
thu bang » thu ban, thu hang, chu bang
hoang te » hoang tu, hoang le, hoang thi
tuc van » thuc van, truc van, tuc va
su sach » so sach, vu sach
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((thu nang) or (thu bang)) xa hoi. hieu ve cam tuc van ((hoang te) OR (hoang de)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((thu nang) OR (thu bang)) xa hoi. hieu ve cam tuc van ((hoang te) OR (hoang de)) va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((thu nang) or (thu bang)) xa hoi. hieu ve cam tuc van ((hoang te) OR (hoang de)) va triet*".