Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuc van » thuc vat, thuc dan, thuc va
tuc van » truc van, tuc va, duc van
hoi hoi » hoi hoc, hoc hoi, hoi doi
hieu ve » hieu va, hieu van
de cua » le cua, te cua, dieu cua
anh de » hanh de, anh d, anh ve
su xac » pu xac, su cac
xac ky » cac ky, sac ky, bac ky
ho hoi » hoc hoi, hoa hoi, co hoi
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 xac ky nang ((ho hoi) or (hoi hoi)). hieu ve cam ((tuc van) OR (thuc van)) anh de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky nang ((ho hoi) OR (hoi hoi)). hieu ve cam ((tuc van) OR (thuc van)) anh de cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su xac ky nang ((ho hoi) or (hoi hoi)). hieu ve cam ((tuc van) OR (thuc van)) anh de cua triet*".