Perhaps you should try some spelling variations:
truc dan » thuc dan, tuc dan, truc ban
hieu ve » hieu va, hieu van
truc va » thuc va, thuc vat, trung va
su sai » su tai, su hai, su dai
sai ky » sac ky
ve cau » ke cau, va cau, ve cac
vi cua » vai cua
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky nang x hoi. hieu ve cau ((truc dan) or (truc va)) hanh ((vi cua) OR (di cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky nang x hoi. hieu ve cau ((truc dan) OR (truc va)) hanh ((vi cua) OR (di cua)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky nang x hoi. hieu ve cau ((truc dan) or (truc va)) hanh ((vi cua) OR (di cua)) triet*".