Perhaps you should try some spelling variations:
thu nang » thi nang, thu hang, thu bang
tu sach » thu sach, te sach, tu cach
truc va » thuc vat, trung va
hanh va » hang va, hanh vi
thuc va » thuc vat, thuc dan, thuc day
cau tre » cau tren, cau treo, cau tra
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
va cau » van cau, va cac, va dau
ve cau » ke cau, ve cac, le cau

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)) thu nang xa hoi. hieu ve cau ((truc va) or (thuc va)) hanh va cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) thu nang xa hoi. hieu ve cau ((truc va) OR (thuc va)) hanh va cau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) thu nang xa hoi. hieu ve cau ((truc va) or (thuc va)) hanh va cau tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) thu nang xa hoi. hieu ve cau ((truc va) or (thuc va)) hanh va cau tre*.