Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
ban hanh » ban hang
lanh ky » hanh ky, nganh ky, thanh ky
cu tren » tu tren, dua tren
hieu va » hieu qua
cao hoc » co hoc, cho hoc, chat hoc
va dao » ca dao
cham o » cham soc
di cu » di cau, di cua, di du

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat lanh ky nang cao hoc. ((hieu va) OR (lieu va)) cham o ((ban hanh) or (va dao)) di cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat lanh ky nang cao hoc. ((hieu va) OR (lieu va)) cham o ((ban hanh) OR (va dao)) di cu tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat lanh ky nang cao hoc. ((hieu va) OR (lieu va)) cham o ((ban hanh) or (va dao)) di cu tren*".