Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sach ty » sach y, sach tu, sach thu
tinh va » tich va, trinh van, trinh vat
cam duc » cam xuc, cao duc, pham duc
van cam » van nam, van lam, van cau
ty hang » ly hang, ty xang, thi hang
hang x » nang x, hoang xa, chang xu
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: te sach ty hang x hoi. hieu van cam duc va ((tinh va) or (sinh vat)) ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty hang x hoi. hieu van cam duc va ((tinh va) OR (sinh vat)) ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: te sach ty hang x hoi. hieu van cam duc va ((tinh va) or (sinh vat)) ((cua te) or (cua tu))*.