Perhaps you should try some spelling variations:
thien van » thi van
dinh lai » dinh lam, dinh lap, dinh tai
van cam » van nam, van lam, van cau
cua tre » cuu tre, cua triet, dua tren
va dinh » van dinh, va kinh, va tinh
cam duc » cam xuc, cao duc, pham duc
sach ky » sac ky, sach ty, sach kem
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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 ky) or (sach y)) nang ma hoi. thien van cam duc va dinh lai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) nang ma hoi. thien van cam duc va dinh lai ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach y)) nang ma hoi. thien van cam duc va dinh lai ((cua tre) OR (cua te))*".