Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
nang tai » tang tai, sang tai, nang cao
hang tai » hang va, dung tai
hanh tai » han tai, hinh tai, nhanh thai
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
cam luc » cam xuc, cau luc
hieu ve » hieu va, hieu van
luc va » duc va, tuc va, loc va
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y ((nang tai) or (hang tai)) roi. hieu ve cam luc va ((hanh tai) OR (thanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang tai) OR (hang tai)) roi. hieu ve cam luc va ((hanh tai) OR (thanh tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((nang tai) or (hang tai)) roi. hieu ve cam luc va ((hanh tai) OR (thanh tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang tai) or (hang tai)) roi. hieu ve cam luc va ((hanh tai) OR (thanh tai)) cua tre*.