Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
hieu van » hieu va, thien van, hieu ve
nam duoc » nam thuoc, da duoc, dat duoc
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
duoc ma » duoc lam
ma hang » mat hang, mua hang, va hang
hang di » hang doi, hang vi, hang dien
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua

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 (thuat lanh)) ky nang xa hoi. ((hieu van) OR (lieu va)) nam duoc ma hang di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat lanh)) ky nang xa hoi. ((hieu van) OR (lieu va)) nam duoc ma hang di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuat lanh)) ky nang xa hoi. ((hieu van) OR (lieu va)) nam duoc ma hang di cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat lanh)) ky nang xa hoi. ((hieu van) OR (lieu va)) nam duoc ma hang di cua tre*.