Perhaps you should try some spelling variations:
phan tai » pham tai, nhan tai, phan thi
cua tre » cua te, cuu tre, cua triet
thu san » thuy san, thu ban, phu san
tai cua » thai cua, tai cuc, tri cua
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
luc va » duc va, tuc va, loc va
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, xac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (thu san)) ky lang xa hoi. hieu va cam ((xuc va) OR (luc va)) phan tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (thu san)) ky lang xa hoi. hieu va cam ((xuc va) OR (luc va)) phan tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (thu san)) ky lang xa hoi. hieu va cam ((xuc va) OR (luc va)) phan tai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (thu san)) ky lang xa hoi. hieu va cam ((xuc va) OR (luc va)) phan tai cua tre*.