Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hieu thien » hieu hien, chieu chien, dieu khien
trinh van » trinh han, trinh quan, trinh toan
thu sach » thuat sach, thuoc sach, thu hoach
hach xuc » thach duc, hanh xu, cach xu
va trinh » van trinh, va tinh, lap trinh
tu sach » su sach, te sach, tu cach
van phu » san phu, van phung, van phan
phu tre » phu tran, phu troi, thuc tre
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

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 (thu sach)) ky nang x hoi. hieu thien hach xuc va trinh van phu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky nang x hoi. hieu thien hach xuc va trinh van phu tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ky nang x hoi. hieu thien hach xuc va trinh van phu tre*.