Perhaps you should try some spelling variations:
hoang xa » hoang ha, hoang va, hoang xuan
dinh tri » chinh tri
thi nang » thi cong, ki nang, thi hanh
va dinh » van dinh, va kinh, va tinh
cuu tre » cau tren, cau treo
tu sach » thu sach, su sach, te sach
cam tuc » cam xuc, cam tu, nam thuc
y hoang » x hoang, _ hoang, m hoang
hieu va » lieu va, hieu qua
cua tre » cua te, cua triet, dua tren
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: tu sach y hoang xa hoi. ((hieu va) or (thi nang)) cam tuc va dinh tri ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y hoang xa hoi. ((hieu va) OR (thi nang)) cam tuc va dinh tri ((cuu tre) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach y hoang xa hoi. ((hieu va) or (thi nang)) cam tuc va dinh tri ((cuu tre) or (cua tre))*.