Perhaps you should try some spelling variations:
thien cao » thien bao, thien cac, thien cau
toc sach » hoc sach, doc sach, thuoc sach
chat tuc » chat xuc, luat tuc, chat huu
cua viet » ca viet, cua vat, cua dieu
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
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: toc sach y nang xa hoi. thien cao chat tuc va danh vi ((cua tre) or (((cua viet) OR (hoa viet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang xa hoi. thien cao chat tuc va danh vi ((cua tre) OR (((cua viet) OR (hoa viet)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang xa hoi. thien cao chat tuc va danh vi ((cua tre) or (((cua viet) OR (hoa viet))))".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang xa hoi. thien cao chat tuc va danh vi ((cua tre) or (((cua viet) OR (hoa viet))))*.