Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu vien » hieu hien, hieu viec, thieu nien
thuc van » thuc vat, thuc dan, thuc hanh
vien cac » vien bach, vien dai, vien da
lang xa » lang ha, dang xay, lang van
sach ky » sac ky, sach y, sach ty
nang xa » nang x, nang ma, mang xa
thuc va » thuc vat, thuc dan, thuc day
hanh te » hanh tu, hanh ve, hanh de
vu sach » vu bach, su sach, vu khach
te cua » tue cua, le cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky ((nang xa) OR (lang xa)) hoi. hieu vien cac ((thuc van) or (thuc va)) hanh te cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((nang xa) OR (lang xa)) hoi. hieu vien cac ((thuc van) OR (thuc va)) hanh te cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky ((nang xa) OR (lang xa)) hoi. hieu vien cac ((thuc van) or (thuc va)) hanh te cua triet*".