Perhaps you should try some spelling variations:
te sach » toc sach
ty nang » ky nang, ty xang, ly nang
ty hang » ly hang, ty xang, thi hang
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
dich su » lich su, dich vu, dich tu
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho
su va » su van, tu va
thiet » thieu

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 ((ty nang) or (ty hang)) x hoi. hieu ve cam xuc van dich su va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ty hang)) x hoi. hieu ve cam xuc van dich su va thiet.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) or (ty hang)) x hoi. hieu ve cam xuc van dich su va thiet*.