Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cham luc » cham soc, nhan luc, cham cuu
han tai » hang tai, nhan tai, van tai
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
luc va » duc va, tuc va, loc va
bao ky » cao ky, ban ky, bac ky

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

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