Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van ban
van anh » van thanh, tuan anh, van minh
cau luu » cau luc
hieu ve » hieu va, hieu van
te sach » toc sach
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
ve cau » ke cau, va cau, ve cac
ve su » va su

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

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