Perhaps you should try some spelling variations:
than tai » thanh tai, toan tai, nhan tai
cham luc » cham soc, nhan luc, cham cuu
cua tre » cua te, cuu tre, cua triet
han tai » hang tai, nhan tai, van tai
hieu va » lieu va, hieu qua
va cham » va chat, va tham
lang ha » long ha
lang xa » dang xay, lang van
bai ky » ban ky, sai ky, bac ky
luc va » duc va, tuc va, loc va
te bai » te bao, te tai, te ban

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

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