Perhaps you should try some spelling variations:
thien van » thi van
lam trang » lam trong, lam trung, lam truong
trang va » tran van, hang va
hieu van » hieu va, lieu va, hieu ve
tu sach » thu sach, su sach, te sach
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((nang xa) OR (nang ma)) hoi. ((hieu van) or (thien van)) lam trang va tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (nang ma)) hoi. ((hieu van) OR (thien van)) lam trang va tinh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang xa) OR (nang ma)) hoi. ((hieu van) or (thien van)) lam trang va tinh vi cua tre*".