Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
hoc sach » hoc cac, hoc anh
thai cua » than cua, tai cuc, tri cua
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) OR (hoc sinh)) ky lang xa hoi. lieu va cam ((duc va) or (tuc va)) thanh thai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (hoc sinh)) ky lang xa hoi. lieu va cam ((duc va) OR (tuc va)) thanh thai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) OR (hoc sinh)) ky lang xa hoi. lieu va cam ((duc va) or (tuc va)) thanh thai cua te".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) OR (hoc sinh)) ky lang xa hoi. lieu va cam ((duc va) or (tuc va)) thanh thai cua te*.