Perhaps you should try some spelling variations:
thanh va » thanh van, thanh ha, thanh ve
hieu van » hieu va, thien van, lieu va
sach ty » sach y, sach tu, sach thu
hanh va » hang va, hanh vi
tu sach » thu sach, su sach, te sach
cam duc » cam xuc, cao duc, pham duc
van cam » van nam, van lam, van cau
ty nang » ky nang, ty xang, ty hang
cua tu » cua tuc, cua su, cua cu
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: tu sach ty nang x hoi. hieu van cam duc va ((thanh va) or (hanh va)) ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. hieu van cam duc va ((thanh va) OR (hanh va)) ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. hieu van cam duc va ((thanh va) or (hanh va)) ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu van cam duc va ((thanh va) or (hanh va)) ((cua te) OR (cua tu))*.