Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh lap » thanh san, phan lap, thanh hai
va thanh » gia thanh, ban thanh, va tinh
dao tuc » dao duc
lap cua » lai cua, tap cua, lam cua
dao xuc » dao duc, dao xu, dao xuan
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet

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) or (van xay)) hoi. hieu va ((dao xuc) OR (dao tuc)) va thanh lap cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y ((nang xa) OR (van xay)) hoi. hieu va ((dao xuc) OR (dao tuc)) va thanh lap cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y ((nang xa) or (van xay)) hoi. hieu va ((dao xuc) OR (dao tuc)) va thanh lap cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat sach y ((nang xa) or (van xay)) hoi. hieu va ((dao xuc) OR (dao tuc)) va thanh lap cua tre*.