Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
nang mai » nang ma, nang tai, lang mai
hang doi » hang di, hang loi, huong doi
thuc va » thuc vat, thuc dan, thuc day
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang
truc va » thuc vat, trung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang mai hoi. hieu ve cham ((truc va) or (thuc va)) ((hang doi) or (dang dieu)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang mai hoi. hieu ve cham ((truc va) OR (thuc va)) ((hang doi) OR (dang dieu)) cua viet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang mai hoi. hieu ve cham ((truc va) or (thuc va)) ((hang doi) or (dang dieu)) cua viet*.