Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
phan lai » phan loai, phan lap, phan lan
sach thu » sach thue, sach thieu, sach tham
nam thuc » nam thuoc, am thuc, nam thu
lai cua » dai cua, hai cua, lai chau
va phan » van phan, va phat, va phap
thuc va » thuc vat, thuc dan, thuc day
hieu vu » hieu va, hieu ve, hieu su
sach ty » sach y, sach tu, xach tay
nang co » nang cao, nang doc, nang noi
nang ho » nang hoc, tang ho, nang cao
vu nam » su nam, tu nam, va nam

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) or (sach thu)) ((nang ho) or (nang co)) hoi. hieu vu nam thuc va phan lai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) ((nang ho) OR (nang co)) hoi. hieu vu nam thuc va phan lai cua viet.
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach thu)) ((nang ho) or (nang co)) hoi. hieu vu nam thuc va phan lai cua viet*.