Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
danh vai » danh sai, danh va, doanh van
cuu tre » cua tre, cau tren, cau treo
va danh » va dinh, va dan, va hanh
tu sach » thu sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
cam ly » tam ly, cam ky, cam lo

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ty nang xa hoi. hieu ve cam ly va danh vai ((cuu tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty nang xa hoi. hieu ve cam ly va danh vai ((cuu tre) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ty nang xa hoi. hieu ve cam ly va danh vai ((cuu tre) or (su triet))*.