Perhaps you should try some spelling variations:
tham tuc » tham thuc, thai tuc, nham thuc
cua tre » cua te, cua triet, dua tren
dinh du » dinh duc, dinh cu, dinh tu
va dinh » van dinh, va kinh, va tinh
hoc anh » hoc nganh, hoc nhanh, ngoc anh
thi van » thi lan, thi hanh, thi nang
nang xa » nang x, lang xa, nang ma
cuu tre » cau tren, cau treo
anh ky » hanh ky, anh y, anh my
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc anh ky nang xa hoi. ((thien van) or (thi van)) tham tuc va dinh du ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc anh ky nang xa hoi. ((thien van) OR (thi van)) tham tuc va dinh du ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc anh ky nang xa hoi. ((thien van) or (thi van)) tham tuc va dinh du ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: hoc anh ky nang xa hoi. ((thien van) or (thi van)) tham tuc va dinh du ((cua tre) OR (cuu tre))*.