Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
huong doi » huong dan, trong doi, dung doi
sach thu » sach thue, sach thieu, sach tham
xa huong » xa phuong, va huong, xa muong
cham tuc » nham thuc, pham thuc, cham soc
doi cua » dai cua, hoi cua
hieu va » lieu va, hieu qua
cach tu » cach thuc
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach thu) or (cach tu)) nang x hoi. hieu va ((cham tuc) OR (tham thuc)) xa huong doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach thu) OR (cach tu)) nang x hoi. hieu va ((cham tuc) OR (tham thuc)) xa huong doi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach thu) or (cach tu)) nang x hoi. hieu va ((cham tuc) OR (tham thuc)) xa huong doi cua tre".
• Adding a wildcard symbol may retrieve word variants: so ((sach thu) or (cach tu)) nang x hoi. hieu va ((cham tuc) OR (tham thuc)) xa huong doi cua tre*.