Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
te sach » toc sach
tu sach » thu sach, su sach, tu cach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
danh va » doanh va, hanh va, anh va
tu sac » tu cac, tu san, tu bac
va cam » va cham, va cac, va cao
cam tu » cam thu, nam tu, dam tu

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 (((tu sach) or (te sach)))) ky nang xa hoi. hieu va cam tu va danh va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (((tu sach) OR (te sach)))) ky nang xa hoi. hieu va cam tu va danh va su triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (((tu sach) or (te sach)))) ky nang xa hoi. hieu va cam tu va danh va su triet*.