Perhaps you should try some spelling variations:
danh thai » anh thai, dang thai, dinh thai
hoc sach » hoc cac, hoc anh
thai cao » tai cao, thoai cac, thuat cao
cao tren » ca tren, cau tren, co tren
cac luc » cau luc, coc luc, cac nuoc
va danh » va dinh, va dan, va hanh
tu sac » tu sach, tu cac, tu san
luc va » duc va, tuc va, loc va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (((hoc sach) OR (hoc sinh)))) ky nang x hoi. lieu va cac luc va danh thai cao tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (((hoc sach) OR (hoc sinh)))) ky nang x hoi. lieu va cac luc va danh thai cao tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (((hoc sach) OR (hoc sinh)))) ky nang x hoi. lieu va cac luc va danh thai cao tren".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (((hoc sach) OR (hoc sinh)))) ky nang x hoi. lieu va cac luc va danh thai cao tren*.