Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh tai » thanh tai, hang tai, hinh tai
te sach » toc sach
han tai » hang tai, nhan tai, van tai
cam luc » cam xuc, cau luc
cuc tre » duc tre, cua tre, cuu tre
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
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: ((te sach) or (thuoc sach)) ky dang xa hoi. hieu ve cam luc va ((hanh tai) OR (han tai)) cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) ky dang xa hoi. hieu ve cam luc va ((hanh tai) OR (han tai)) cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuoc sach)) ky dang xa hoi. hieu ve cam luc va ((hanh tai) OR (han tai)) cuc tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuoc sach)) ky dang xa hoi. hieu ve cam luc va ((hanh tai) OR (han tai)) cuc tre*.