Perhaps you should try some spelling variations:
lang hoa » hang hoa, lang ha, nang hoa
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
ve triet » va trien, su triet
ky lang » ky nang, ky dang, ky tang
hoa hoi » khoa hoi, hoa hoc, hoa doi
hanh ve » hanh vi, hanh va, hanh kem
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
le nam » he nam, le na, te nam
ve ve » de ve, va ve, ke ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky lang hoa hoi. hieu ((le nam) or (ly nam)) thuc van hanh ve ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang hoa hoi. hieu ((le nam) OR (ly nam)) thuc van hanh ve ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang hoa hoi. hieu ((le nam) or (ly nam)) thuc van hanh ve ve triet*.