Perhaps you should try some spelling variations:
hanh dien » nhanh dien, hang dien, danh dien
nang hoc » nang doc, nang luc, dong hoc
su triet » su viet, su tien, ve triet
hoc hoi » hoc khoi, hoc hoa, hoc noi
hieu ve » hieu va, hieu van
truc va » thuc va, trung va
dien su » dien tu, nien su, den su
te cac » tu cac, ve cac, te cao
ve cau » ke cau, va cau, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cac ky nang hoc hoi. hieu ve cau ((truc va) or (thuc vat)) hanh dien su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky nang hoc hoi. hieu ve cau ((truc va) OR (thuc vat)) hanh dien su triet.
• Adding a wildcard symbol may retrieve word variants: te cac ky nang hoc hoi. hieu ve cau ((truc va) or (thuc vat)) hanh dien su triet*.