Perhaps you should try some spelling variations:
trinh tai » trinh toan, trinh tu, trinh han
dang xay » dang van
tinh tai » tinh thai, tinh hai, hinh tai
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, cua triet
ke dan » le dan
dan ky » van ky
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ke dan ky ((dang xay) OR (van xay)) hoi. lieu va cac xuc va ((tinh tai) or (trinh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ke dan ky ((dang xay) OR (van xay)) hoi. lieu va cac xuc va ((tinh tai) OR (trinh tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ke dan ky ((dang xay) OR (van xay)) hoi. lieu va cac xuc va ((tinh tai) or (trinh tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ke dan ky ((dang xay) OR (van xay)) hoi. lieu va cac xuc va ((tinh tai) or (trinh tai)) cua tre*.