Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh lap » thanh san, phan lap, thanh hai
day thanh » dao thanh, dat thanh, da thanh
thuc day » thuc dan, thuc vat
hoc cac » hoc cao
lap cho » cap cho, tap cho, lai cho
cho tre » cho thue, khoe tre
nang xa » nang x, lang xa, nang ma
le nam » ly nam, he nam, le na
ve nam » he nam, va nam, te nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc cac) or (thuat sach)) ky nang xa hoi. hieu ((ve nam) OR (le nam)) thuc day thanh lap cho tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc cac) OR (thuat sach)) ky nang xa hoi. hieu ((ve nam) OR (le nam)) thuc day thanh lap cho tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc cac) or (thuat sach)) ky nang xa hoi. hieu ((ve nam) OR (le nam)) thuc day thanh lap cho tre".
• Adding a wildcard symbol may retrieve word variants: ((hoc cac) or (thuat sach)) ky nang xa hoi. hieu ((ve nam) OR (le nam)) thuc day thanh lap cho tre*.