Perhaps you should try some spelling variations:
manh tang » manh thang, manh tung, anh tang
vien cac » vien bach, vien dai, vien da
tang tai » hang tai, dung tai, sang tao
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cu tren » tu tren, dua tren
ve cai » va cai, ve cac, ve tai
tai cu » tai cuc, tai cua, tai co

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 ky nang xa hoi. hieu ((ve cai) or (vien cac)) suc manh tang tai cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu ((ve cai) OR (vien cac)) suc manh tang tai cu tren.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu ((ve cai) or (vien cac)) suc manh tang tai cu tren*.