Perhaps you should try some spelling variations:
chat xuc » chat huu, cam xuc, chao xu
vanh dai » van dai, vanh tai, lanh dao
su sach » so sach, vu sach
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
hai xuc » hai cuc, hai xu, hai huoc
va vanh » va van, va danh, va hanh
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: su sach ((ky lang) or (ky tang)) xa hoi. hieu qua ((hai xuc) OR (chat xuc)) va vanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky lang) OR (ky tang)) xa hoi. hieu qua ((hai xuc) OR (chat xuc)) va vanh dai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky lang) or (ky tang)) xa hoi. hieu qua ((hai xuc) OR (chat xuc)) va vanh dai cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky lang) or (ky tang)) xa hoi. hieu qua ((hai xuc) OR (chat xuc)) va vanh dai cua te*.