Perhaps you should try some spelling variations:
thanh hoi » thanh hoai, thanh hoa, thanh hai
ve triet » su triet
va trien » va truyen, va thiet, va tuyen
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
te sai » te tai, te bai, te lai
sai ky » sac ky
xuc va » tuc va, luc va, xac va
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: te sai ky nang x hoi. hieu ve cham ((xuc va) or (duc va)) thanh hoi ((ve triet) OR (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky nang x hoi. hieu ve cham ((xuc va) OR (duc va)) thanh hoi ((ve triet) OR (va trien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky nang x hoi. hieu ve cham ((xuc va) or (duc va)) thanh hoi ((ve triet) OR (va trien))".
• Adding a wildcard symbol may retrieve word variants: te sai ky nang x hoi. hieu ve cham ((xuc va) or (duc va)) thanh hoi ((ve triet) OR (va trien))*.