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
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
tinh vi » trinh vi, tinh voi, tinh va
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 hoi. ((hieu va) or (thien van)) lam trang may tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. ((hieu va) OR (thien van)) lam trang may tinh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. ((hieu va) or (thien van)) lam trang may tinh vi cua tre*.