Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
tinh tai » trinh tai, tinh thai, tinh hai
nang xa » nang x, lang xa, nang ma
hieu ha » hieu hoa, hieu ca, hieu xa
hieu va » lieu va, hieu qua
va tinh » may tinh
cua tre » cuu tre, cua triet, dua tren
y nang » ky nang, ly nang, v nang
nam tu » nam thu, nam thuc
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y nang xa hoi. ((hieu ha) OR (hieu va)) nam tu va tinh tai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang xa hoi. ((hieu ha) OR (hieu va)) nam tu va tinh tai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang xa hoi. ((hieu ha) OR (hieu va)) nam tu va tinh tai ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang xa hoi. ((hieu ha) OR (hieu va)) nam tu va tinh tai ((cua tre) or (cua te))*.