Perhaps you should try some spelling variations:
ve triet » va trien, su triet
pham duy » pham duc
hanh tai » thanh tai, hang tai, han tai
hanh dai » hanh dao, vanh dai, thanh dat
sach thu » sach thue, sach thieu, sach tham
duy tuan » duy luan, duy tan, quy tuan
sach ty » sach y, sach tu, xach tay
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve pham » vi pham, v pham, ve phan

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 ty) or (sach thu)) nang xa hoi. hieu ve pham duy tuan ((hanh dai) or (hanh tai)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) nang xa hoi. hieu ve pham duy tuan ((hanh dai) OR (hanh tai)) ve triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) nang xa hoi. hieu ve pham duy tuan ((hanh dai) or (hanh tai)) ve triet*.