Perhaps you should try some spelling variations:
nang hoa » nang hoat, hang hoa, nang hoc
hanh vai » hanh vi, hanh va, hanh tai
cua viet » ca viet, hoa viet, cua vat
hoa hoi » khoa hoi, hoa hoc, hoa doi
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
le ham » le pham, le ha, le hai
le am » le nam, le a, le av

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang hoa hoi. hieu ((le am) or (le ham)) thuc va hanh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang hoa hoi. hieu ((le am) OR (le ham)) thuc va hanh vai cua viet.
• Adding a wildcard symbol may retrieve word variants: te sac ky nang hoa hoi. hieu ((le am) or (le ham)) thuc va hanh vai cua viet*.