Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
thanh ve » hanh ve, thanh va, thanh vien
thuc van » thuc vat, thuc dan, thuc va
hieu van » hieu va, thien van, lieu va
thu sach » tu sach, thuat sach, thuoc sach
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
van cam » van nam, van lam, van cau
tuc van » truc van, tuc va, duc van
te sach » toc sach
ma hoi » mai hoi, xa hoi, ma hoa
ve cua » le cua, de cua, te cua

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) or (thu sach)) ky sang ma hoi. hieu van cam ((tuc van) OR (thuc van)) thanh ve cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu sach)) ky sang ma hoi. hieu van cam ((tuc van) OR (thuc van)) thanh ve cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thu sach)) ky sang ma hoi. hieu van cam ((tuc van) OR (thuc van)) thanh ve cua viet*".