Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
van hanh » van thanh, ban hanh, van anh
thuc van » thuc vat, thuc dan, thuc va
tu cach » tu cac
vu nham » vu kham, vu cham, sua nham
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
hieu vu » hieu va, hieu ve, hieu su
xay hoi » xa hoi, tay hoi, cay phoi
anh xay » manh xay, anh hay, nganh xay
te sach » toc sach
tu anh » tu hanh, tu manh, thu anh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (te sach)) tu anh xay hoi. hieu vu nham thuc van hanh ((vai cua) or (lai cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) tu anh xay hoi. hieu vu nham thuc van hanh ((vai cua) OR (lai cua)) tu.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) tu anh xay hoi. hieu vu nham thuc van hanh ((vai cua) or (lai cua)) tu*.