Perhaps you should try some spelling variations:
thien van » thi van
lam trang » lam trong, lam trung, lam truong
trang may » trang mat, trang mau, trang va
hieu van » hieu va, lieu va, hieu ve
tinh vai » tinh va, tinh hai, tinh bai
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky

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) OR (sac ky)) nang xa hoi. ((hieu van) or (thien van)) lam trang may tinh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang xa hoi. ((hieu van) OR (thien van)) lam trang may tinh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) nang xa hoi. ((hieu van) or (thien van)) lam trang may tinh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sac ky)) nang xa hoi. ((hieu van) or (thien van)) lam trang may tinh vai cua tre*.